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.

Q: Question: A lady bought five books namely A,B,C,D,E to distribute her 7 friends. How many ways she can distribute books?

 Option A: 7^3

 Option B: 7^4

 Option C: 7^5

 Option D: 7^6

 Option E: 7^2

A: Option C
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Q: Question: For all integers x>1. <x>=2x+(2x-1)+(2x-2)+......2+1. What is the value of <2>*<4>?

 Option A:  60

 Option B:  116

 Option C:  210

 Option D:  263

 Option E:  360

A: Option E
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Q: Question: A sum of money is put out at compound interest for 2 years at 20%. It would fetch Rs.241 more if the interest were payable half-yearly, then it were pay able yearly. Find the sum.

 Option A: 12200

 Option B: 11897

 Option C: 18799

 Option D: 10000

 Option E: 12782

A:
Option D
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