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 Q]: Question: a light flashes every 30 seconds, how many times will it flash in ? of an hour?

 Option A: 550

 Option B: 600

 Option C: 650

 Option D: 700

 Option E: 120
[EX A]: Option E

[EX Q]: Question: A batsman scored 90 runs which included 2 boundaries and 7 sixes. What percent of his total score did he make by running between the wickets.

 Option A: 30%

 Option B: 40%

 Option C: 44.44%

 Option D: 60%

 Option E: 80%
[EX A]: Option C

[EX Q]: Question: Seller selling an apple for Rs.17, a Seller loses 1/6th of what it costs him. The CP of the apple is?

 Option A: 10

 Option B: 12

 Option C: 18

 Option D: 19

 Option E: 20
[EX A]:
Option C