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
Regarding nitric oxide false is 
Select and explain. 
A. Derived from endothelium, B. Acts by increasing c–AMP levels, C. Vasodilator, D. Derived from arginine
B: Acts by increasing c–AMP levels
Answer: B: Acts by increasing c–AMP levels 
Explanation: Nitric oxide is formed from Arginine, released from endothelial cells and acts through cGMP to cause vasodilation.