12 is 4% of a, and 4 is 12% of b. c equals b/a. What is the value of c?  Choose the correct choice from the following choices:	A) 1 / 2	B) 1 / 3	C) 1 / 6	D) 1 / 9	E) 1 / 12

Rationale: "4 a / 100 = 12 a = 300 12 b / 100 = 4 b = 100 / 3 c = b / a = 100 / ( 3 * 300 ) = 1 / 9 the answer is d ."
Answer: D