A 'Zoonotic' Disease Is

A 'zoonotic' disease is:

A) a disease that only animals contract and that cannot pass to humans.
B) a human disease that originated in an animal species.
C) a disease that only occurs in zoos.
D) a disease that only affects zoo animals.
E) a disease that does not kill its victims but leaves them with few human capacities (leaves them like a lower animal) .