Clostridium and Escherichia Coli Are Both Well-Known Genera of Rod-Shaped

Multiple Choice

Clostridium and Escherichia coli are both well-known genera of rod-shaped bacteria, but they are classified into different groups based on their peptidoglycan content.If Clostridium stains purple during a Gram stain test, then we know that E.coli is

A) an archaeon.
B) Gram-positive.
C) a eukaryote.
D) Gram-negative.
E) a spirochete.