You work for microsoft in their global cell phone group. you have been made project manager for the design of a new cell phone. your supervisors have already scoped the project so you have a list showing the work breakdown structure and this includes major project activities. you must plan the project schedule and calculate project duration. your boss wants the schedule on his desk tomorrow morning! you have been given the information in exhibit 5.13. it includes all the activities required in the project and the duration of each activity. also, dependencies between the activities have been identified. remember that the preceding activity must be fully completed before work on the following activity can be started. your project is divided into five major subprojects. subproject "p" involves developing specifications for the new cell phone. here decisions related to such things as battery life, size of the phone, and features need to be made. these details are based on how a customer uses the cell phone. these user specifications are redefined in terms that have meaning to the subcontractors that will actually make the new cell phone in subproject "s" supplier specifications. these involve engineering details for how the product will perform. the individual components that make up the product are the focus of subproject "d." subproject "i" brings all the components together, and a working prototype is built and tested. finally in subproject "v," suppliers are selected and contracts are negotiated. exhibit 5.13: work breakdown structure and activities for the cell phone design projectmajor subprojects/activities activity identification dependency duration (weeks)product specifications (p) market research p1 — 2overall product specifications p2 p1 4hardware p3 p2 5software p4 p3 5supplier specifications (s) hardware s1 p4 5software s2 p4 6product design (d) battery d1 s1 2display d2 s1 1camera d3 s1 3outer cover d4 d1, d2, d3 4product integration (i) hardware i1 d4 5user interface i2 d2 4software coding i3 i2 4prototype testing i4 i1, i3 4subcontracting (v) suppliers selection v1 s1 ,s2 12contract negotiation v2 i4, v1 2a. calculate the start and finish times for each activity. (leave no cells blank - be certain to enter "0" wherever required.)activity earliest start time earliest finish time latest start time latest finish timep1 p2 p3 p4 s1 s2 d1 d2 d3 d4 i1 i2 i3 i4 v1 v2 b. determine the minimum number of weeks for completing the project. minimum number of weeks c. find the activities that are on the critical path for completing the project in the shortest time. p1-p2-p3-p4-s1-d3-d4-i1-i4-v2p1-p2- p3-p4-s2-v1-v2p1-p2-p3-p4-s1-d2-i2- i3-i4-v2p1-p2-p3-p4-s1-d1-d4-i1-i4- v2