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: Social & Preventive Medicine
Disadvantage of INH prophylaxis are all of the Following except 
Select and explain. 
A. Cannot prevent disease in infected person, B. Not effective, C. Costly, D. Risk of hepatitis
A: Cannot prevent disease in infected person
Answer: A: Cannot prevent disease in infected person 
Explanation: None