All the students of class are told to sit in circle shape. Here the boy at the 10 th position is exactly opposite to 45 th boy. Total number of boys in the class?	Choose the correct answer.
A) 65 B) 68 C) 72 D) 70 E) 58

Rationale: "as half the circle shape consist of 45 - 10 = 35 boys , so total number of boys in full circle = 2 * 35 = 70 answer : d"
Answer: D