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
Example of cold burn is /are: 
Select and explain. 
A. Frostbite, B. Trench foot in soldiers., C. Immersion foot occurring in shipwrecked persons., D. All of the above.
D: All of the above.
Answer: D: All of the above. 
Explanation: Cold burns include

Freezing injuries (frostbite)
Non-freezing cold injuries e.g. chilblain (localized painful erythema in the fingers, toes or ears produced by cold damp weather)
Trench foot seen in soldiers
Immersion foot occurring in shipwrecked persons.