Task: Question Answering
Input (English): Question: If the tens digit of positive integer x is 6 and the tens digit of positive integer y is 6, how many possible values of the tens digit of 2(x+y) can there be?

 Option A: 2

 Option B: 3

 Option C: 4

 Option D: 5

 Option E: 6
Output (English): Option C