Consider the postfix expression 4 5 6 a b 7 8 a c, where a, b, c are operators. Operator a has higher precedence over operators b and c. Operators b and c are right associative. Then, equivalent infix expression is

A. 4 a 5 6 b 7 8 a c

B. 4 a 5 c 6 b 7 a 8

C. 4 b 5 a 6 c 7 a 8

D. 4 a 5 b 6 c 7 a 8

Answer: Option C