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 fraudulent dairy guy declares to market his dairy at price range but he combined it with water and therefore benefits 25 %. the percentage of water in the combination is :
Options: a. 20 %, b. 30 %, c. 50 %, d. 35 %, e. 60 %
[A]: a


[Q]: Problem: what is the sum of all 3 digit numbers that leave a remainder of ' 2 ' when divided by 7 ?
Options: a. 70,592, b. 64,850, c. 64,749, d. 149,700, e. 156,720
[A]: a


[Q]: Problem: if 3 men or 4 women can do a piece of work in 16 days, in how many days can 12 men and 8 women do the same piece of work ?
Options: a. 8 / 3, b. 6, c. 5, d. 4, e. 3
[A]:
a