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: Microbiology
You are investigating the exposure to aflatoxin in a young man with hepatocellular carcinoma. There is a history of consumption of soya sauce which could have been contaminated. Which is the likely organism responsible? 
Select and explain. 
A. Fusarium, B. Rhizopus, C. Candida, D. Aspergillus
D: Aspergillus
Answer: D: Aspergillus 
Explanation: Aspergillus species produce toxins that exhibit a wide range of toxicities and cause significant long-term effects. Aflatoxin B1 is perhaps the most potent liver carcinogen known for a wide range of animal species, including humans. Mycotoxins produced by Aspergillus species are, aflatoxins B1 and B2, aflatoxins G1 and G2, cyclopiazonic acid, ochratoxin A, sterigmatocystin, fumitremorgens, territrems, tryptoquivalines, cytochalasins, and echinulins.