【单选题】Why do people use "cats and dogs" to refer to heavy rain?
A.
During heavy rain in the 17th century England, some city became raging rivers carrying a large amount of dead cats and dog, which seems like the cats and dogs are poured with the rain.
B.
In England, there were a large amount of cats and dogs in the streets of many cities.
C.
Cats and dogs like to play around during heavy rain.