Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.

[Q]: Problem: a cricket player whose bowling average was 21.5 runs per wicket, takes 5 wicket for 52 runs in a match. due to this his average decreases by 0.5. what will be the number of wickets taken by him till the last match ?
Options: a. 64, b. 72, c. 111, d. 721, e. 108
[A]: c


[Q]: Problem: a van takes 5 hours to cover a distance of 495 km. what speed in kph should the van maintain to cover the same distance in 3 / 2 of the previous time ?
Options: a. 60, b. 63, c. 66, d. 69, e. 72
[A]: c


[Q]: Problem: how many 2 - inch by 3 - inch rectangular tiles are required to tile this shaded region ?
Options: ['a. less than 10', 'b. 10 — 100', 'c. 101 — 1,000', 'd. 1,001 — 1,500', 'e. 1,500 +']
[A]:
e