Definition: 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: Question: One fourth of one third of two fifth of a number is 15. What will be40% of that number

 Option A: 140

 Option B: 150

 Option C: 180

 Option D: 200

 Option E: 220

Option C