The total age of A and B is 13 years more than the total age of B and C. C is how many years younger than A.?	Choose the correct answer:
A) 16 B) 12 C) 15 D) 20 E) 13

Rationale: "( a + b ) - ( b - c ) = 13 a - c = 13 answer is e"
Answer: E