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:. 005 / ? =. 01
Options: a.. 5, b.. 05, c.. 005, d.. 0005, e. none of them
[EX A]: a

[EX Q]: Problem: the cash realised on selling a 14 % stock is rs. 109.25, brokerage being 1 / 4 % is ?
Options: a. 366, b. 106, c. 102, d. 109, e. 122
[EX A]: d

[EX Q]: Problem: a candidate appearing for an examination has to secure 55 % marks to pass paper i. but he secured only 45 marks and failed by 25 marks. what is the maximum mark for paper i ?
Options: a. 127, b. 120, c. 130, d. 140, e. 150
[EX A]:
a