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: What is the area of an equilateral triangle whose one side length is 80?

 Option A: 800√3

 Option B: 1000√3

 Option C: 1200√3

 Option D: 1400√3

 Option E: 1600√3

Ex Output:
Option E


Ex Input:
Question: How many zeroes are there at the end of the number N, if N = 150! + 300! ?

 Option A: 28

 Option B: 31

 Option C: 34

 Option D: 37

 Option E: 40

Ex Output:
Option D


Ex Input:
Question: There is 7 friends (A1, A2, A3....A7).If A1 have to have shake with all without repeat. How many handshakes possible?

 Option A: 6

 Option B: 21

 Option C: 28

 Option D: 7

 Option E: 5

Ex Output:

Option A