Fact 1: Most mollusks have shells. Fact 2: Cephalopods are a class of marine mollusks. Given the two facts above, what have shells?

pick from the following.
I. keeps the organism warm.
II. lima beans.
III. whales.
IV. objects that have mass.
V. it needs them.
VI. most cephalopods.
VII. barnacles.
VIII. sharks.
The answer is:
VI.