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
[{'content': 'What is the most probable portal of entry of an Aspergillus - \nSelect and explain. \nA. Puncture wound, B. Blood, C. Lungs, D. Gastrointestinal tract', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]