Which of the Following Describes the Composition of Cell Walls

Which of the following describes the composition of cell walls found in water molds?

A) All individuals have only cellulosic walls.
B) All individuals have only chitinous walls.
C) All individuals have only peptidoglycan walls.
D) Some individuals have cell walls of chitin, and others have cell walls of cellulose.
E) Some individuals have cell walls of chitin, some have cell walls of cellulose, and some have cell walls of both chitin and cellulose.