Potter & weasley company had the following activities, estimated indirect activity costs, and allocation bases: activitiesindirect activity costsallocation baseaccount inquiry (hours)$86,4002,700account billing (lines)$56,00032,000account verification (accounts)$38,25025,500corresponden ce (letters)$80,00010,000potter & weasley uses activity based costing. the above activities are used by departments p and q as follows: department pdepartment qaccount inquiry (hours)400800account billing (lines)10,0004,000account verification (accounts)6,0007,000correspondence (letters)1,0002,000what is the cost per driver unit for the account inquiry activity? a) $1.75b) $8.64c) $8.00d) $32.00