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 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: A man took a loan at rate of 12% per annum simple interest. After 3 years he had to pay 4320 interest. The principal amount borrowed by him was.

 Option A: Rs 14000

 Option B: Rs 15000

 Option C: Rs 12000

 Option D: Rs 17000

 Option E: None of these
[EX A]: Option C

[EX Q]: Question: One hour after Yolanda started walking from X to Y, a distance of 52 miles, Bob started walking along the same road from Y to X. If Yolanda's walking rate was 3 miles per hour and Bobт's was 4 miles per hour, how many miles had Bob walked when they met?

 Option A: 28

 Option B: 23

 Option C: 22

 Option D: 21

 Option E: 19.5
[EX A]:
Option A