Task: Question Answering
Input (English): Problem: if y exceeds x by 20 %, then x is less than y by ?
Options: a. 16 2 / 8 %, b. 16 8 / 3 %, c. 16 2 / 3 %, d. 76 2 / 3 %, e. 17 2 / 3 %
Output (English): c