Bacteriochlorophyll Differs from Chlorophyll a and B in Structure and Function

Bacteriochlorophyll differs from chlorophyll a and b in structure and function. Which of the following statements correctly contrasts these types of chlorophyll?

A) Bacteriochlorophyll has a saturated carbon- carbon bond at one location in the porphyrin ring, whereas chlorophyll does not.
B) Bacteriochlorophyll has a porphyrin ring, whereas chlorophyll does not.
C) Chlorophyll has a phytol side chain, but bacteriochlorophyll does not.
D) Chlorophyll has a methyl group attached to the porphyrin ring, whereas bacteriochlorophyll has a formyl group.
E) Both A and D correctly contrast these types of chlorophyll.