You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Input: Consider Input: Question: Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into hat. If the slips are then drawn one at a time without replacement, how many must be drawn to ensure that the numbers on two of the slips drawn will have a sum of 9?

 Option A: 2

 Option B: 3

 Option C: 1

 Option D: 6

 Option E: 4

Output: Option D


Input: Consider Input: Question: In an examination, 32% candidates failed in one subject and 42% failed in another subject while 15% failed in both the subjects. If 2500 candidates appeared at the end of the examination how many passed in either subject but not in both?

 Option A: 975

 Option B: 1020

 Option C: 1100

 Option D: 1243

 Option E: 1525

Output: Option C


Input: Consider Input: Question: Find the constant k so that : -x2 - (k + 8)x - 8 = -(x - 2)(x - 4)

 Option A: 11

 Option B: 12

 Option C: 14

 Option D: 19

 Option E: 15


Output: Option C