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
True about chlamydia are all except: 
Select and explain. 
A. Obligate intracellular organism, B. Gram positive, C. Reticulate body is metabolically active, D. Replicate by binary fission
B: Gram positive
Answer: B: Gram positive 
Explanation: Ans. is. 'b' i. e., Gram positive