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': 'Sporulation takes place in which phase of bacterial growth? \nSelect and explain. \nA. lag phase, B. log phase, C. stationary phase, D. decline phase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]