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.

Q: Problem: a fort had provision of food for 150 men for 45 days. after 10 days, 25 men left the fort. find out the number of days for which the remaining food will last.
Options: a. 44, b. 42, c. 40, d. 38, e. 36

A: b
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Q: Problem: the perimeter of an isosceles right triangle is 12 + 12 sq rt 2. what is the length of the hypotenuse of the triangle ?
Options: ['a. 5', 'b. 6', 'c. 7', 'd. 8.485', 'e. 8']

A: d
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Q: Problem: a farmer grows broccoli in his farm that is in the shape of a square. each broccoli takes 1 square foot of area in his garden. this year, he has increased his output by 101 broccoli when compared to last year. the shape of the area used for growing the broccoli has remained a square in both these years. how many broccoli did he produce this year ?
Options: ['a. 2400', 'b. 2601', 'c. 1987', 'd. 2000', 'e. can not be determined']

A:
b
****