Which of the Following Is a Major Difference Between Adaptive

Which of the following is a major difference between adaptive immunity and innate defenses?

A) Adaptive immunity includes defense components which are multicellular,such as skin,tears,and mucus;innate defenses include cellular and subcellular components.
B) Adaptive immunity responses are the first to attack an invader;innate defenses are the second responses to attack an invader.
C) Adaptive immunity responses are produced only on demand;innate defenses are always produced.
D) Adaptive immunity responses are similar to most pathogens;innate defenses are always specific for specific pathogens.
E) All answers are correct.