Q: Fact 1: Fish have a centralized nervous system with a brain. Fact 2: Sharks are a type of fish. Given the two facts above, what has a centralized nervous system with a brain?

pick from the following.
(I) Man
(II) Birds
(III) leeches
(IV) shark
(V) evergreens
(VI) salmon
(VII) worms
(VIII) pan
A:
(IV)