This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: mycology, Subject name: Microbiology
Discharging sinus is seen in 
Select and explain. 
A. Sporotrichosis, B. Cryptococcosis, C. Histoplasmosis, D. Mycetoma
D: Mycetoma
Answer: D: Mycetoma 
Explanation: Mycetoma begins as a subcutaneous swelling usually of the foot which enlarges and borrows into the deeper tissues producing abscess. It burst with the formation of chronic multiple sinuses discharging viscous seropurulent fluid containing granules. Ref: Textbook of Microbiology, Ananthanarayan and Paniker; 9th edition