Task: Question Answering
Input (English): Problem: in a school with 632 students, the average age of the boys is 12 years and that of the girls is 11 years. if the average age of the school is 11 years 9 months, then the number of girls in the school is
Options: a. 150, b. 200, c. 250, d. 158, e. none
Output (English): d