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 Input:
Problem: find large number from below question the difference of two numbers is 1000. on dividing the larger number by the smaller, we get 10 as quotient and the 10 as remainder
Options: a. 1234, b. 1110, c. 1456, d. 1200, e. 1600

Ex Output:
b


Ex Input:
Problem: if x + y = 260, x - y = 200, for integers of x and y, y = ?
Options: a. 200, b. 230, c. 50, d. 115, e. 150

Ex Output:
b


Ex Input:
Problem: given f ( x ) = 3 x – 5, for what value of x does 2 * [ f ( x ) ] + 8 = f ( 3 x – 6 )
Options: a. 0, b. 4, c. 6, d. 7, e. 13

Ex Output:

d