This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System Pa 1, Subject name: Physiology
Which of the following is not a metabolic function of the lung? 
Select and explain. 
A. Synthesis of surfactant, B. Inactivation of bradykinin, C. Formation of angiotensin II, D. Inactivation of vasopressin
D: Inactivation of vasopressin
Answer: D: Inactivation of vasopressin 
Explanation: Metabolic functions of the lungs.1. Manufacture surfactant 2. Fibrinolytic system that lyses clots in pulmonary system.3. Release, synthesize various substances into the blood, removed some substances from circulation 4. Activate angiotensin I to angiotensin II. 5. Inactivation of bradykinin by the release of ACE (angiotensin conveing enzyme or kininase)