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
Oval bulging terminal spores seen in - 
Select and explain. 
A. Cl. teium, B. Cl. welchii, C. Cl. perfringens, D. Cl. histolyticum
A: Cl. teium
Answer: A: Cl. teium 
Explanation: Ans. is 'a' i.e., Cl. teium