A Child Is Brought to the Clinic by His Mother

A child is brought to the clinic by his mother. The mother states he has been at Boy Scout camp. The child has a rash on his face, arms, and legs. The child states it itches severely. The child has probably come in contact with:

A) latex gloves.
B) a food to which he is allergic.
C) chlorine in the pool.
D) poison ivy.