Task: Question Answering
Input (English): Question: If a and b are different values and a – b = 4(√a - √b), then in terms of b, a equals:

 Option A: √b

 Option B: b

 Option C: b - 8√b + 16

 Option D: b + 2√b + 1

 Option E: b^2 – 2b√b + b
Output (English): Option C