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
Bedsore is an example of ? 
Select and explain. 
A. Tropical ulcer, B. Trophic ulcer, C. 'Venous ulcer, D. Post thrombotic ulcer
B: Trophic ulcer
Answer: B: Trophic ulcer 
Explanation: Ans. is 'b' i.e., Trophic ulcer "Trophic ulcers are neurogenic ulcers which are caused by various factors such as impairment of nutrition of the tissues, inadequate blood supply and neurological deficit. Bed sore is included in the group of "trophic ulcers"