This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
[{'content': 'Most common type of pathogenic bacteria grow in temperatures \nSelect and explain. \nA. 25 to 40 degrees centigrade, B. -20 degrees, C. 0 to 20 degrees, D. Above 50 degrees', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Mesophiles grow in between 25 to 40 They are the most common type of bacteria Organisms that prefer extreme environments are known as extremophiles. Ref: CP Baveja 4th ed Pg: 6', 'role': 'assistant'}]