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: The sector of a circle has radius of 42 cm and central angle 135o. Find its perimeter?

 Option A: 91.5 cm

 Option B: 92.2 cm

 Option C: 28.9 cm

 Option D: 29.2 cm

 Option E: 183 cm

Ex Output:
Option E


Ex Input:
Question: For positive integers x and z, which of the following can be written as z^2?

 Option A: x^2+1

 Option B: x^2-1

 Option C: x^2-24

 Option D: x^2+11

 Option E: x^2-11

Ex Output:
Option D


Ex Input:
Question: If a + b - c = 2d, and if a - b + c = 2e, then a =

 Option A: 2(d + e

 Option B: d + e

 Option C: (d + e

 Option D: d-2e

 Option E: e-d

Ex Output:

Option B