Choose the Type of Plant Chemical or Its Action Most

Choose the type of plant chemical or its action most closely associated with the consequence listed below. Each chemical or action may be used more than once.
-degrading cell walls of pathogens

A) jasmonates
B) salicylic acid
C) phytoalexins
D) "antifreeze proteins"
E) oligosaccharins
F) PR proteins
G) systemin