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.

Ex Input:
Question: A is twice as fast as B. If B alone can do a piece of work in 18 days, in what time can A and B together complete the work?

Option A: 10

Option B: 16

Option C: 18

Option D: 6

Option E: 12

Ex Output:
Option D

Ex Input:
Question: Mr. Evans will states that each of his children will receive an equal share of his estate and that his grandchildren will split a portion of the estate that is equal to the share received by each of his children. If Mr. Evans has 4 children and 5 grandchildren, then approximately what percentage of Mr. Evans estate will each grandchild receive?

Option A: 20%

Option B: 17%

Option C: 4.0%

Option D: 3.3%

Option E: 2.8%

Ex Output:
Option C

Ex Input:
Question: If {g} denote the remainder when 3g is divided by 2 then which of the following is equal to 1 for all positive integers g?
I. {2g+1}
II. {2g}+1
III. 2{g+1}

Option A: I only

Option B: II only

Option C: I and II

Option D: III only

Option E: II and III

Ex Output:
Option C