The total age of A and B is 12 years more than the total age of B and C. C is how many year younger than A Choose the correct choice from the following options
A) 11
B) 12
C) 13
D) 14
E) 15

Rationale: "explanation : given that a + b = 12 + b + c = > a – c = 12 + b – b = 12 = > c is younger than a by 12 years answer : option b"
Answer: B