there are 3 question answer them and Each answer should have between 70-120 words. REMEMBER to cite a reference for each answer. last time u just cite one references PLEASE FOLLOW THE INSTRUCTIONS

the questions:

1. Describe the main difference between Type I, II, III, and IV hypersensitivities.

2- Describe the process of a type I hypersensitivity reaction including the primary and secondary response.

3- Explain the effects of widespread histamine release in the body.