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: 3889 + 14.952 - ? = 3854.002

 Option A: 47.95

 Option B: 49.95

 Option C: 45.97

 Option D: 47.59

 Option E: 45.79
[A]: Option B


[Q]: Question: A certain sum earns simple interest of Rs. 800 in 2 years at a certain rate of interest. If the same sum earns compound interest of Rs.900in the same period of 2 years, What must be the rate of interest?

 Option A: 25%

 Option B: 10%

 Option C: 15%

 Option D: 20%

 Option E: 30%
[A]: Option A


[Q]: Question: The sum of three consecutive odd numbers is 20 more than the first of these numbers. What is the middle number?

 Option A: 5

 Option B: 7

 Option C: 9

 Option D: 11

 Option E: 10
[A]:
Option C