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
Stalactite growth in ghee broth is due to - 
Select and explain. 
A. H. influenza, B. C. diphtheria, C. Y pestis, D. T. pallidium
C: Y pestis
Answer: C: Y pestis 
Explanation: None