This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
Asthma is a result of which type of hypersensitivity 
Select and explain. 
A. Type I, B. Type II, C. Type III, D. Type IV
D: Type IV
Answer: D: Type IV 
Explanation: Type I hypersensitivity: immediate (atopic or anaphylactic) Type Ihypersensitivity is an allergic reaction. ... Asthma is a form of anaphylaxis, as a combination of oedema and airway constriction prevents tissues from getting sufficient oxygen.