Task: Question Answering
Input (English): Question: Rick deposited $850 to his bank account using $5 and $15 dollar bills only. If Rick came to the bank with 70 bills and left with 10 bills only, how many $15 dollar billsმ did he deposit?

 Option A: 5

 Option B: 25

 Option C: 50

 Option D: 55

 Option E: 65
Output (English): Option D