Within a population of E.coli cells,you frequently observe rod-shaped cells that are significantly larger than the rest.This species is not known to be pleomorphic.Which is the most likely explanation for your observation?

A)Cells are different because nutritional needs are not being met
B)Cells are at different stages of growth before binary fission
C)Cells are contaminated with Staphylococcus
D)Cells have lost their cell walls\
E)Cells have lost their plasma membranes