Task: Question Answering
Input (English): Question: Jo's collection contains US, Indian and British stamps. If the ratio of US to Indian stamps is 5 to 2 and the ratio of Indian to British stamps is 5 to 1, what is the ratio of US to British stamps?

 Option A: 5 : 1

 Option B: 10 : 5

 Option C: 15 : 2

 Option D: 20 : 2

 Option E: 25 : 2
Output (English): Option E