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: the smallest number which when diminished by 2, is divisible by 12, 16, 18, 21 and 28 is
Options: a. 1008, b. 1010, c. 1022, d. 1032, e. 1043

A: b
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Q: Problem: two trains of equal are running on parallel lines in the same direction at 45 km / hr and 36 km / hr. the faster train passes the slower train in 36 sec. the length of each train is ?
Options: a. 45, b. 88, c. 66, d. 55, e. 22

A: a
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Q: Problem: a sum fetched a total simple interest of rs. 929.20 at the rate of 8 p. c. p. a. in 5 years. what is the sum ?
Options: a. 2323, b. 1223, c. 2563, d. 1853, e. 2353

A:
a
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