The average score in Mathematics of 90 students of section A and B of class IX was 63. The number of student in A were 10 more than those in B. The average score of students in A was `30%` more than that of students in B. The average score of students in B is :

Options

A. (A) 60
B. (B) 50
C. (C) 54
D. (D) 56

Answer

C