A student conducted an experiment to test the effect of the digestive enzyme pepsin on cooked egg white and potato in the presence of hydrochloric acid at a pH of 1. . Which could be a probable inference? . . . . A.Pepsin digests egg white because it mainly contains protein.. . . .B. Pepsin digests potato because it mainly contains starch.. . . . C.Pepsin digests egg white because it mainly contains fat..