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
Which of the following specimens should never be refrigerated 
Select and explain. 
A. H.influenzae, B. P.aeruginosa, C. Moraxella catarrhalis, D. Escherichia coli
A: H.influenzae
Answer: A: H.influenzae 
Explanation: H.influenzae ishighly sensitive to low temperature.