Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.

[EX Q]: Problem: if a man lost 10 % by selling oranges at the rate of 12 a rupee at how many a rupee must he sell them to gain 44 % ?
Options: a. 6.5, b. 7.5, c. 7, d. 8, e. 2
[EX A]: b

[EX Q]: Problem: bob wants to run a mile in the same time as his sister. if bob ’ s time for a mile is currently 11 minutes 20 seconds and his sister ’ s time is currently 9 minutes 36 seconds, by what percent does bob need to improve his time in order run a mile in the same time as his sister ?
Options: a. 3 %, b. 5 %, c. 8 %, d. 10 %, e. 15 %
[EX A]: e

[EX Q]: Problem: anne bought doughnuts for a class breakfast party. she bought 9 chocolate doughnuts, 7 coconut doughnuts, and 9 jam - filled doughnuts. how many doughnuts did anne buy in all ?
Options: a. 25, b. 36, c. 39, d. 21, e. 11
[EX A]:
a