Timothy ran inside and slammed the door behind him. He held an umbrella, but his clothes were wet. "It's raining cats and dogs out there!" he yelled at no one in particular.

Which statement describes the meaning of the phrase "raining cats and dogs"?

A. Cats and dogs are playing in the rain.

B. Cats and dogs are running from the rain.

C. It is raining very hard.

D. The rain is about to stop.