This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'In third degree burns all are seen except \nSelect and explain. \nA. Painful, B. Vesicles are absent, C. Leathery skin, D. Reddish due to HB infiltration', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Third degree burns Full thickness burn Involve all layers of dermis Characterized by hard leathery eschar, that is painless and black, white or cherry red No capillary refilling or pin-prick sensation All dermal and epidermal components are lost Heals only by wound contractures Require excision with skin grafting to heal. Ref: Sabiston 20th edition Pgno :506-507', 'role': 'assistant'}]