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: Physiology
[{'content': 'If there is a Gs alfa subunit gain-of-function mutation, this results in: \nSelect and explain. \nA. Decreased cAMP, B. Decreased IP3, C. Increased GTPase activity, D. Increased cAMP', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Increased cAMPGs-a subunit gain would cause increased adenyl cyclase level - ultimately resulting in increased c-AMP levelQ, (because adenyl cyclase conves ATP to c-AMP).', 'role': 'assistant'}]