AMC 10 2000 Problem 21

If all alligators are ferocious creatures and some creepy crawlers are alligators, which statement(s) must be true?

I. All alligators are creepy crawlers.

II. Some ferocious creatures are creepy crawlers.

III. Some alligators are not creepy crawlers.

Answer Choices
A. I only
B. II only
C. III only
D. II and III only
E. None must be true