Which of the Following Is the Correct Order of the Three

Multiple Choice

Which of the following is the correct order of the three lines of defense against pathogens?​

A) ​barriers that exclude pathogens → adaptive immunity → innate immunity
B) ​barriers that exclude pathogens → innate immunity → adaptive immunity
C) ​innate immunity → adaptive immunity → barriers that exclude pathogens
D) ​adaptive immunity → barriers that exclude pathogens → innate immunity
E) ​adaptive immunity → innate immunity → barriers that exclude pathogens