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: Medicine
[{'content': 'Majority of the pseudomona infections occur in the: \nSelect and explain. \nA. ICU, B. Wards, C. Operation theatre, D. Labour room', 'role': 'user'}, {'content': 'Answer: A \nExplanation: P. aeruginosa is found in moist environments. It has simple nutritional needs. P. aeruginosa infection occurs with host defense compromise, mucosal trauma, physiologic derangement, and antibiotic-mediated suppression of normal flora. The majority of P. aeruginosa infections occur in intensive care units (ICUs). Ref: Harrison, E-18, P-1266.', 'role': 'assistant'}]