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.

Input: Consider Input: Problem: 18.05 ã — 0.001 = ?
Options: a. 0.1805, b. 0.01805, c. 1.805, d. 0.001805, e. none of these

Output: b


Input: Consider Input: Problem: a no. when divided by 281 gives a remainder 160, what remainder will be obtainedby dividingthe same no. 21 ?
Options: a. 21, b. 22, c. 23, d. 24, e. 25

Output: a


Input: Consider Input: Problem: reema took a loan of rs 900 with simple interest for as many years as the rate of interest. if she paid rs. 729 as interest at the end of the loan period, what was the rate of interest.
Options: a. 5 %, b. 6 %, c. 7 %, d. 8 %, e. 9 %


Output: e