Which of the following are true with regard to anaerobic respiration in bacteria?

Q. Which of the following are true with regard to anaerobic respiration in bacteria?

P. The final electron acceptor is an inorganic substance other than molecular oxygen

Q. The number of ATP molecules produced per glucose molecule is more than that produced in aerobic respiration

R. The number of ATP molecules produced per glucose molecule is less than that produced in aerobic respiration

S. Only substrate level phosphorylation is used to generate ATP

(A) P and S only                       

(B) Q and S only

(C) P and R only                       

(D) P, Q and S only

Ans: P and R only