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
[{'content': 'True about Clostridium tertium -a) Gram variableb) Terminal sporec) Produces exotoxind) Causes septic orthritis \nSelect and explain. \nA. acd, B. bcd, C. abc, D. abd', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Cl. tertium:\n\nNonexotoxin-producing, Aerotolerant, Gram variable\nOval and terminal spore – tennis racket shaped\nResembles lactobacilli\nIt is a rare human pathogen\nCauses: Necrotizing Fasciitis and Gangrene, septicemia, septic arthritis\n\nApurba Sastry’s Essentials of Medical Microbiology 1/e p264', 'role': 'assistant'}]