This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'which of the following antimicrobials should not be given to a 4C asthmatic patient managed on theophylline therapy ? \nSelect and explain. \nA. ERYTHROMYCIN, B. CEFOTIXIME, C. COTRIMOXAZOLE, D. AMOXICILLIN', 'role': 'user'}, {'content': 'Answer: A \nExplanation: THEOPHYLLIN + ERYTHROMYCIN = QT PROLONGATION REF : KD TRIPATHI 8TH ED', 'role': 'assistant'}]