This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thermal injuries, Subject name: Forensic Medicine
False about trench foot is: 
Select and explain. 
A. Due to moist heat, B. Due to prolonged immersion, C. Can develop necrosis and gangrene, D. Gradual rewarming is done
A: Due to moist heat
Answer: A: Due to moist heat 
Explanation: TRENCH FOOT IS DUE TO EXPOSURE TO EXTREME COLD AND DAMPNESS, NOT DUE TO MOIST HEAT. MOIST HEAT CAUSES SCALDS TRENCH FOOT / IMMERSION FOOT Immersion foot/ trench foot and trench hand are types of immersion syndrome injuries. It occurs due to prolonged exposure to severe cold and dampness Seen in soldiers during warfare times Can develop necrosis and gangrene