Which of the Following Is True of the Allergic Response

Multiple Choice

Which of the following is true of the allergic response?

A) Sufferers produce the IgE class of gamma globulins in response to allergens.
B) Upon the very first exposure to an allergen,an allergy sufferer will probably experience a runny nose,watery eyes,and mild wheezing.
C) It is a normal,healthy,adaptive response to an allergen.
D) All of the above answers are true.