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
Frie's test is useful for diagnosis of 
Select and explain. 
A. Mycoplasma, B. Rickettsia, C. Sarcoidosis, D. Chiamydia
D: Chiamydia
Answer: D: Chiamydia 
Explanation: None