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: Pharmacology
[{'content': 'Which one of the following drugs cause hypo magnesemia by increased excretion? \nSelect and explain. \nA. Frusemide therapy, B. Cisplatin, C. Digitalis, D. Aminoglycosides', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a\' i.e., Frusemide therapy "Loop diuretics cause the abolition of transepithelial potential difference that results in marked increase in excretion of Ca2++ and mg2++".', 'role': 'assistant'}]