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 sum of 4 consecutive even numbers is 140. what would be the smallest number ?
Options: a. 32, b. 88, c. 70, d. 123, e. 12

A: a
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Q: Problem: aaron will jog from home at 2 miles per hour and then walk back home by the same route at 4 miles per hour. how many miles from home can aaron jog so that he spends a total of 3 hours jogging and walking ?
Options: a. 5, b. 7, c. 3, d. 9, e. 10

A: c
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Q: Problem: the chance of rain on any given day in tel - aviv is 50 %. what is the probability z that it rained in tel - aviv on exactly 4 out of 6 randomly chosen days ?
Options: a. 15 / 64, b. 30 / 64, c. 1 / 2, d. 1 / 4, e. 52 / 64

A:
a
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