This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Anatomy
[{'content': 'Which of the following specimens should never be refrigerated \nSelect and explain. \nA. H.influenzae, B. P.aeruginosa, C. Moraxella catarrhalis, D. Escherichia coli', 'role': 'user'}, {'content': 'Answer: A \nExplanation: H.influenzae ishighly sensitive to low temperature.', 'role': 'assistant'}]