In a school, there are 35 students in class 2A and 40 in class 2B. The mean score for class 2A in an Englihs literature examination is 670.0 and that for 2B in the same paper is 52.5. Find, to one place of decimal, the mean for the combined calles

• A.1.5
• B.56.0
• C.56.2
• D.56.3
• E.56.5