Only circus animals with a clean bill of health will perform in today’s exhibition. A monkey, a poodle, and a horse will perform in today’s exhibition. No circus animals with a clean bill of health were prescribed medications this week.
If the statements above are true, which one of the following must also be true on the basis of them?

A. The monkey, poodle, and horse are the only animals performing in today’s circus exhibition.

B. No circus animals were prescribed medications this week.

C. No more than two circus animals have a clean bill of health.

D. Neither the monkey nor the horse performing in today’s circus exhibition were prescribed medications this week.