Most bacteria live in a solution that is hypotonic relative to the cytoplasm of the bacteria.This means that the bacterial cell is constantly taking in water.The cell wall of a bacterium is a peptidoglycan polymer that is tightly cross-linked.This would therefore function to

A)regulate the flow of most molecules into and out of the bacterial cell.
B)provide a rigid wall that prevents the cell from swelling.
C)provide a rigid wall that prevents the cell from shrinking.
D)confirm a close relationship to plant cells that have a similar structure and live in hypotonic solutions.
E)make all bacteria fairly uniform in metabolic chemistry.