If 4 cats can kill 4 rats in 4 minutes, how long will it take 100 cats to kill 100 rats?  Choose the correct choice from the following choices.
A) 1 minutes	B) 2 minutes	C) 3 minutes	D) 4 minutes	E) 5 minutes

Rationale: "it will take 4 minutes for 100 cats to kill 100 rats . 1 cat can kill 1 rat in 4 minutes , so 100 cats can kill 100 rats in 4 minutes answer d"
Answer: D