Which of the following statements best describes mollusks?

A)Mollusks include gastropods,bivalves,and cephalopods;they have a reduced coelom,and many move at a sluggish pace.
B)Mollusks include gastropods,bivalves,and cephalopods;many move at a sluggish pace,and all are aquatic.
C)Mollusks include gastropods and bivalves;several bivalves are terrestrial with adaptations to withstand severe dehydration.
D)Mollusks include gastropods and bivalves,have a mantle,and all are aquatic.