This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
[{'content': 'Liver synthesizes all, except \nSelect and explain. \nA. C3 complement component, B. Haptoglobin, C. Fibrinogen, D. Immunoglobulin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Liver synthesizes clotting factors such as fibrinogen(I), factors V, VII, IX & X. Liver synthesizes Haptoglobin which binds free hemoglobin released from erythrocytes with high affinity and thereby inhibits its oxidative activity. Liver synthesizes C3 complement which is chemotactic & plays a role in opsonization. Immunoglobulins are secreted from plasma cells & play a role in defense mechanism of body.Ref: Medical Physiology, Indu Khurana', 'role': 'assistant'}]