A Dog Is Exposed to a Pathogen That Causes Its

Multiple Choice

A dog is exposed to a pathogen that causes its B cells to produce antigen receptors against the pathogen.A week later,the dog is exposed to a similar but different pathogen.What immune response will the dog's immune system go through?

A) The dog's immune system will produce a secondary immune response since it was previously exposed to a pathogen.
B) The dog's immune system will produce a primary immune response since this pathogen was different from the first pathogen.
C) The dog's immune system will produce a large quantity of histamines because the pathogen is an allergen.