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: The ratio 25:50 expressed as percent equals to

 Option A: 50 %

 Option B: 85 %

 Option C: 25 %

 Option D: 75 %

 Option E: None of above

Option A