Below is my assignment. If I understand this correctly pivot as a median is the middle of the highest, middle, and lowest numbers. In this case 35 (14, 35, 72). Please correct me if I am wrong. I do not understand how to do part b. Could someone please explain this as well? Thank you in advance.

assume the following list of keys

18, 40, 16, 82, 64, 67, 57, 50, 37, 47, 72, 14, 17, 27, 35

This list is to be sorted using the quick sort algorithm. Use pivot as the median of the first, last and middle elements of the list.

a. what is pivot?
b. give the resulting list after one call to the partition procedure.