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: rajani has to read a book of 445 pages. she has already read the first 157 pages of the book and if she reads 24 pages of the book everyday then how long will she take now to complete the book ?
Options: a. 25 days, b. 20 days, c. 46 days, d. 21 days, e. none of these

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

A: a
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Q: Problem: the water level in a reservoir has been dropping at the rate of 14 inches per day. exactly 5 days ago, the water level was at w inches. what will be the water level exactly 3 days from now if the rate at which the level is dropping remains the same ?
Options: a. w − 126, b. w − 56, c. w − 112, d. w + 14, e. w + 126

A:
c
****