The salary of A, B, C, D, E is Rs. 10000, Rs. 5000, Rs. 11000, Rs. 7000, Rs. 9000 per month respectively, then the average salary of A, B, C, D, and E per month is Choose the correct choice from the following: A) rs . 7000 B) rs . 8400 C) rs . 8500 D) rs . 9000 E) none

Rationale: "answer average salary = 10000 + 5000 + 11000 + 7000 + 9000 / 5 = rs . 8400 correct option : b"
Answer: B