You will be given a definition of a task first, then some input of the task.
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.

Problem: a cube of side 5 meter length is cut into small cubes of side 25 cm each. how many such small cubes can be obtained ?
Options: a. 10781, b. 1276, c. 1000, d. 8000, e. 5000
Output:
d