This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
All are true anout mucormycosis, except: 
Select and explain. 
A. Lymph invasion, B. Angio invasion, C. Long term deferoxime therapy, D. Septate hyphae
C: Long term deferoxime therapy
Answer: C: Long term deferoxime therapy 
Explanation: B,C and D Mucormycosis is caused by Rhizopus species,Rhizomucus and Absidia species. It has marked predilection for vascular invasion leading to widespread thrombosis,tissue necrosis and gangrene. Characterstic nasal finding is a dark necrotic turbinate surrounded by pale mucosa blackish discharge and crusts M/C site is middle turbinate followed by middle meatus and septum. IOC-Mri while biopsy is confirmatory Treatment:Includes amphotericin-B,heparin,hyperbaric oxygen and debridement. Ref Current Otolaryngology 3/e,p 295.