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


[Q]: Problem: if x and y are positive integers and 3 + x + y + xy = 17, what is the value of x + y ?
Options: a. 3, b. 5, c. 6, d. 8, e. 9
[A]: c


[Q]: Problem: if n is a positive integer and the product of all integers from 1 to n, inclusive, is a multiple of 630, what is the least possible value of n ?
Options: a. 5, b. 6, c. 7, d. 8, e. 9
[A]:
c