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: the present population of a town is 2000. population increase rate is 20 % p. a. find the population of town after 1 years ?
Options: a. 1000, b. 2400, c. 1500, d. 1600, e. 1250

A: b
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Q: Problem: what is the total number of integers between 10 and 50 that are divisible by 2 ?
Options: a. 18, b. 19, c. 22, d. 25, e. 10

A: b
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Q: Problem: if two positive numbers are in the ratio 1 / 7: 1 / 4, then by what percent is the second number more than the first ?
Options: a. 67 %., b. 70 %., c. 75 %., d. 68 %., e. 80 %.

A:
c
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