On dividing 172 by a number, the quotient is 10 and the remainder is 2. Find the divisor.  Answers.
A) 9  B) 11  C) 13  D) 15  E) 17

Rationale: "d = ( d - r ) / q = ( 172 - 2 ) / 10 = 170 / 10 = 17 e"
Answer: E