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: Microbiology
About diphtheria true is - 
Select and explain. 
A. Capsulated bacteria causes infection, B. Ratio of carriers and clinical cases is one, C. Gram positive and motile, D. Lysogenic phase causes disease
D: Lysogenic phase causes disease
Answer: D: Lysogenic phase causes disease 
Explanation: None