This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
A laboratory technician was accidentally exposed to a HIV serum positive sample, which of the following shall be the role of zidovudine in treatment of this patient ? 
Select and explain. 
A. Protects against acquiring the HIV infection, B. Makes the patient seronegative, C. Delays the progression of disease, D. None
A: Protects against acquiring the HIV infection
Answer: A: Protects against acquiring the HIV infection 
Explanation: None