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
[{'content': 'Sun ray fungus is \nSelect and explain. \nA. Actinomyces irraeli, B. Chromoblastomycosis, C. Streptomyces griseus, D. Cryptococcus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Actinomyces colonies form fungus-like branched networks of hyphae. The aspect of these colonies initially led to the incorrect assumption that the organism was a fungus and to the name Actinomyces, "ray fungus" Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno : 391', 'role': 'assistant'}]