You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Example Input: Question: Raman buys an old scooter for Rs. 5000 and spends Rs. 1000 on its repairs. If he sells the scooter for Rs. 7200, his gain percent is :

 Option A: 20%

 Option B: 12%

 Option C: 10%

 Option D: 5%

 Option E: None of these
Example Output: Option A

Example Input: Question: A theater box office sold an average (arithmetic mean) of 65 tickets per staff member to a particular movie. Among the daytime staff, the average number sold per member was 75, and among the evening staff, the average number sold was 60. If there are no other employees, what was the ratio of the number of daytime staff members to the number of evening staff members?

 Option A: 1:2

 Option B: 1:4

 Option C: 5:11

 Option D: 1:3

 Option E: 13:15
Example Output: Option A

Example Input: Question: If the positive integer x is a multiple of 9/15 and the positive integer y is a multiple of 5/3, then xy must be a multiple of which of the following?
I. 5
II. 3
III. 1

 Option A: II only

 Option B: I and II only

 Option C: I only

 Option D: III only

 Option E: I, II, and III
Example Output:
Option D