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
Swarming growth on culture is characteristic of which Gram positive organism - 
Select and explain. 
A. Clostridium welchii, B. Clostridium tetani, C. Bacillus cereus, D. Proteus mirabilis
B: Clostridium tetani
Answer: B: Clostridium tetani 
Explanation: None