Task: Question Answering
Input (English): Question: If the quantity 6^2+ 6^4 + 6^6 is written as (a + b)(a – b), in which both a and b are integers, which of the following could be the value of b?

 Option A: 52

 Option B: 15

 Option C: 36

 Option D: 22

 Option E: 25
Output (English): Option C