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: Square A is inscribed in circle B. If the perimeter of A is 32, what is the circumference of B?

 Option A: 6√ 2π

 Option B: 4√ 2π

 Option C: 8√ 2π

 Option D: 7√ 2π

 Option E: 5

Ex Output:
Option C


Ex Input:
Question: How many odd 4-digit positive integers R that are multiples of 5 can be formed without using the digit 3?

 Option A: 648

 Option B: 729

 Option C: 900

 Option D: 1296

 Option E: 3240

Ex Output:
Option A


Ex Input:
Question: The height of a triangle is decreased by 25% and its base increased by 50%. Its area will

 Option A: decrease by 12.5%

 Option B: increase by 12.5%

 Option C: decrease by 25%

 Option D: Increase by 25%

 Option E: None of these

Ex Output:

Option B