How many multiples of 4 are there between 20 and 196 ?  Choose the correct choice from the following.
A) 45  B) 42  C) 52  D) 43  E) 51

Rationale: "it should be mentioned whether 20 and 196 are inclusive . if 20 and 196 are inclusive , then the answer is ( 196 - 20 ) / 4 + 1 = 45 . if 20 and 196 are not inclusive , then the answer is ( 192 - 24 ) / 4 + 1 = 43 . since oa is d , then we have not inclusive case ."
Answer: D