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: 5358 x 71 = ?
Options: a. 273762, b. 283758, c. 383298, d. 273258, e. 380418
[A]: e


[Q]: Problem: a shopkeeper sells 500 metres of cloth for rs. 18000 at a loss of rs. 5 per metre. find his cost price for one metre of cloth ?
Options: a. 12, b. 27, c. 29, d. 50, e. 41
[A]: e


[Q]: Problem: the sum of the even numbers between 1 and n is 89 * 90, where n is an odd number, then n = ?
Options: a. 167, b. 173, c. 179, d. 185, e. 193
[A]:
c