On dividing 23 by a number, the quotient is 7 and the remainder is 2. Find the divisor.	Options
A) 1	B) 2	C) 3	D) 6	E) 7

Rationale: "d = ( d - r ) / q = ( 23 - 2 ) / 7 = 21 / 7 = 3 c"
Answer: C