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
Aflatoxin is produced by the fungus? 
Select and explain. 
A. Aspergillus flavus, B. Aspergillus fumigatus, C. Aspergillus niger, D. Penicillium marneffei
A: Aspergillus flavus
Answer: A: Aspergillus flavus 
Explanation: Aflatoxin is a mycotoxin that is produced by the fungi Aspergillus flavus and Aspergillus parasiticus. Exposure to aflatoxin can cause hepatic necrosis later progressing to cirrhosis. It also acts as a carcinogen and can produce hepatocellular carcinoma.