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
Extensive surgical debridement, decompression or amputation may be indicated in the following clinical setting except - 
Select and explain. 
A. Progressive synergistic gangrene, B. Acute thrombophlebitis, C. Acute haemolytic streptococcal cellulitis, D. Acute rhabdomyolysis
B: Acute thrombophlebitis
Answer: B: Acute thrombophlebitis 
Explanation: Ans. is 'b' i.e., Acute thrombophlebitis