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: Microbiology
[{'content': 'Cholera toxin irreversibly stimulates the cAMP-dependent pump in intestinal cells resulting in \nSelect and explain. \nA. Cl- rich watery diarrhea, B. K+ rich watery diarrhea, C. Na+ rich watery diarrhea, D. Ca+ rich watery diarrhea', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Cholera toxin irreversibly stimulates the cAMP-dependent Cl- pump in intestinal cells resulting in massive Cl- rich watery diarrhea. Death is caused by extreme dehydration and electrolyte imbalance.', 'role': 'assistant'}]