On dividing 271 by a number, the quotient is 9 and the remainder is 1. Find the divisor?  Choose the correct answer:
A) 12	B) 15	C) 16	D) 17	E) 30

Rationale: "d = ( d - r ) / q = ( 271 - 1 ) / 9 = 270 / 9 = 30 e )"
Answer: E