Mutant Fruit Flies That Make Only One Antimicrobial Peptide (Defensin

Mutant fruit flies that make only one antimicrobial peptide (defensin or drosomycin) were tested for survival after infection with Micrococcus luteus bacteria and the results are shown in the figure below. What statement about these data is true? Figure 35.2

A) Drosomycin likely protects fruit flies by activating an adaptive immune response.
B) Drosomycin and defensin are equally effective at protecting fruit flies from the bacterial infection.
C) Defensin likely protects fruit flies by activating an innate immune response.
D) After three days, approximately 90% of mutant fruit flies are dead.