The ratio of the number of red cars in a certain parking lot to the number of black cars is 3 to 8. If there are 52 black cars in the lot, how many red cars are there in the lot?
Choose the correct choice from the following answers:
A) 11 B) 20 C) 24 D) 27 E) 32

Rationale: "b is correct r / b = 3 / 8 and b = 52 r = 52 * 3 / 8 = 20"
Answer: B