A Young Woman Notices a Poison Ivy Rash on Her

A young woman notices a poison ivy rash on her legs. Which of the following statements about this rash is TRUE?

A) This rash is an example of a delayed hypersensitivity response.
B) This rash was initiated due to the action of cytotoxic T cells.
C) This rash was caused by the release of T-cell receptors into the woman's circulatory system.
D) Cytokines played no role in the development of this rash.
E) None of the answer options is correct.