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': 'Warfarin induced skin necrosis is seen in ? \nSelect and explain. \nA. Protein C deficiency, B. Protein S deficiency, C. Hemophillia, D. Antithrombin III deficiency', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Protein C deficiency o Warfarin - induced skin necrosis occurs in patients with undiagnosed protein C deficiency.", 'role': 'assistant'}]