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: If two numbers are in the ratio 2:3. If10 is added to both of the numbers then the ratio becomes 5:6 then find the largest number?

 Option A: 20

 Option B: 40

 Option C: 20/3

 Option D: 30

 Option E: 10

Option E