Task: Question Answering
Input (English): Problem: set s consists of integers { 8, 11, 12, 14, 15 }. if integer n is included in the set, the average ( arithmetic mean ) of set s will increase by 25 %. what is the value of integer n ?
Options: a. 28, b. 32, c. 36, d. 40, e. 44
Output (English): d