The Difference Between an Antigen and an Immunogen Is That

The difference between an antigen and an immunogen is that:

A) An immunogen will possess epitopes while an antigen will not
B) An immunogen will stimulate innate or adaptive immunity,while an antigen will stimulate innate defenses only
C) An immunogen will stimulate innate or adaptive immunity,while an antigen will stimulate adaptive defenses only
D) An antigen will stimulate innate or adaptive immunity,while an immunogen will stimulate innate defenses only
E) An antigen will stimulate innate or adaptive immunity,while an immunogen will stimulate adaptive defenses only