A 30-year old woman presented in the emergency room with hives all over her body. After a full examination it was determined that the zoo she had visited that morning caused the reaction. What was the most likely cause of this response?
a. type I hypersensitivity reaction
b. type II hypersensitivity reaction
c. type III hypersensitivity reaction
d. type IV hypersensitivity reaction
e. type V hypersensitivity reaction
Answer: type I hypersensitivity reaction
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