Consider the problem of counting, in a given text, the number of substrings that start with an `A` and end with a `B`. For example, there are four such substrings in `CABAAXBYA`. Design a brute-force algorithm for this problem and determine its efficiency class [in pseudo code!].

Kiesha has a worksheet with a range of cells using the following columns: name, score, group, study group, and date. kiesha needs to sort the worksheet on the date field. which option she use to most efficiently complete this task ? a use the cut and paste option to reorganize the data to fit that order b use the filter function to organize the data based on the date c use the order function to organize the data based on the date d use the sort function to organize the data based on date order