Task: Question Answering
Input (English): Problem: mark and ann together were allocated n boxes of cookies to sell for a club project. mark sold 11 boxes less than n and ann sold 2 boxes less than n. if mark and ann have each sold at least one box of cookies, but together they have sold less than n boxes, what is the value of n ?
Options: a. 10, b. 11, c. 12, d. 13, e. 14
Output (English): c