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.

Example Input: Question: A car dealership has 40 cars on the lot, 30% of which are silver. If the dealership receives a new shipment of 80 cars, 40% of which are not silver, what percentage of total number of cars are silver?

 Option A: 35%

 Option B: 37.5%

 Option C: 45%

 Option D: 47.5%

 Option E: 50%
Example Output: Option E

Example Input: Question: Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is definitely the difference between R and Q's age?

 Option A: 23

 Option B: 28

 Option C: 25

 Option D: 19

 Option E: 11
Example Output: Option C

Example Input: Question: A tap can fill a tank in 10 hours. After half the tank is filled three more similar taps are opened. What is the total time taken to fill the tank completely?

 Option A: 5 hrs 15 mins

 Option B: 11 hrs 15 mins

 Option C: 3 hrs 15 mins

 Option D: 6 hrs 15 mins

 Option E: 7 hrs 15 mins
Example Output:
Option B