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: Surgery
NOT a feature of deep burn is - 
Select and explain. 
A. Black charred skin, B. White leathery skin, C. Loss of pain sensation, D. Blisters
D: Blisters
Answer: D: Blisters 
Explanation: Ans. is d i.e. Blisters Shallow Depth of Burn Colour & Appearance Skin Texture Capillary Refill Pinprick Sensation Healing First degree uper Sficial epidermis Red Normal Yes Yes 5-10 days. No scar Burn Second degree Superficial paial thickness Red may be blistered Edematous Dry to very small bilsters Yes Yes 7-14 days. No. or minimal scar Deep paial Thickness Pink to White bullae or moist Thick Possibly Possibly 25-60 days, dense scar see d Third eg Full thickness thick White black or brown Leathery Dry & Inelastic No No No spontaneous healing Deep Burn Involves underlying No spontaneous Fouh degree subcutaneous tissue tendon or bone Variable Variable No No healing According to Sabiston & CSDT (13/e p210) blisters are seen only in 2'd degree superficial burns (i.e. Shallow burns). Whereas Schwaz writes that blisters can be also be seen in 2nd degree deep burns.