This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biomedical Waste Management, Subject name: Social & Preventive Medicine
[{'content': 'Quality control agent for Sterilization in Autoclave \nSelect and explain. \nA. Bacillus subtilis, B. Bacillus pumilus, C. Bacillus stearothermophilus, D. Bacillus globigi', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Autoclaving Geobacillus stearothermophilus(GBS) Hydroclaving Bacillus subtilis Microwaving Bacillus atrophaeus Dry heat GBS or Bacillus atrophaeus', 'role': 'assistant'}]