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 clostridium tetani -a) It is gram +veb) Drum stick appearancec) Grows in aerobic environmentd) It is gram -ve 
Select and explain. 
A. ac, B. ab, C. ad, D. bc
B: ab
Answer: B: ab 
Explanation: None