The total age of A and B is 10 years more than the total age of B and C. C is how many years younger than A?
Select the correct option.
A) 12 B) 10 C) c is elder than a D) data inadequate E) none

Rationale: "solution [ ( a + b ) - ( b + c ) ] = 10 â € ¹ = â € º a - c = 10 . answer b"
Answer: B