Task: Question Answering
Input (English): Question: Find the average marks of all the students in classes A and B, if :
classes A = 43 students (average marks of students is 65)
classes B = 54 students (average marks of students is 72)

 Option A: 41.9

 Option B: 68.9

 Option C: 65.9

 Option D: 61.9

 Option E: 62.9
Output (English): Option B