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': 'If there is a Gs alpha subunit gain-of-function mutation, this results in \nSelect and explain. \nA. Decreased CAMP, B. Decreased 1P3, C. Increased GTPase activity, D. Increased cAMP', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Gs activates Ca++ channel opening', 'role': 'assistant'}]