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.

[EX Q]: Problem: subtracting 3 % of a from a is equivalent to multiplying a by how much ?
Options: a. 0.97, b. 9.4, c. 0.094, d. 94, e. none
[EX A]: a

[EX Q]: Problem: if x gets 25 % more than y and y gets 20 % more than z, the share of z out of rs. 1110 will be :
Options: a. rs. 300, b. rs. 200, c. rs. 240, d. rs. 350, e. none of these
[EX A]: a

[EX Q]: Problem: if mn = 0 and 25 percent of n equals 37 1 / 2 percent of m, what is the value of 12 n / m ?
Options: a. 18, b. 323323, c. 8, d. 3, e. 98
[EX A]:
a