A father said his son , " I was as old as you are at present at the time of your birth. " If the father age is 38 now, the son age 5 years back was
Options:  A) 14  B) 17  C) 11  D) 19  E) 99

Rationale: "let the son ' s present age be x years . then , ( 38 - x ) = x x = 19 . son ' s age 5 years back = ( 19 - 5 ) = 14 years answer : a"
Answer: A