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
Superinfection is common in : 
Select and explain. 
A. Narrow spectrum antibiotics, B. Immunocompromised host, C. Low spectrum antibiotics, D. Nutritional deficiency
B: Immunocompromised host
Answer: B: Immunocompromised host 
Explanation: None