Problem: Kerri purchased a new plant that she thought was just perfect. Unfortunately, she developed a rash after handling the plant. The rash is most likely the result of Select one: a. haptens binding directly to helper T cells and stimulating an immune response. b. haptens interacting with existing antibodies and destroying Kerri's adaptive immunity. c. haptens damaging blood vessels in the skin, resulting in increased permeability of these blood vessels. d. haptens derived from the plant combining with skin molecules and then stimulating an immune response.