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: The least number of complete years in which a sum of money put out at 20% C.I. will be more than doubled is?

 Option A: 3

 Option B: 4

 Option C: 9

 Option D: 3

 Option E: 5
Example Output: Option B

Example Input: Question: If integers a and b are distinct factors of 30, which of the following CANNOT be a factor of 30?
I. ab + b^2
II. (a + b)^2
III. a + b

 Option A: I only

 Option B: II only

 Option C: III only

 Option D: I and II only

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

Example Input: Question: The area of a square field is 64816 sq m. How long will a lady take to cross the field diagonally at the rate of 7.2 km/hr?

 Option A: 2 min

 Option B: 4 min

 Option C: 5 min

 Option D: 3 min

 Option E: 3.5 min
Example Output:
Option D