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': 'A 25 years old female complains of recurrent rhinitis, nasal discharge and bilateral nasal blockage since one year. She has a history of asthma and allergy. On examination, multiple ethmoidal polyps are noted with mucosal thickening and impacted secretions in both the nasal cavities. A biopsy is taken and the material is cultured which show the growth of many hyphae and pseudohyphae with dichotomous branching typically at 45°. Which of the following is the most likely responsible organism? \nSelect and explain. \nA. Aspergillus fumigatus, B. Rhizopus, C. Mucor, D. Candida', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Information provided in this question are : -\n\n\nRecurrent rhinitis, nasal discharge, bilateral nasal blockage.\nH/O asthma and allergy\nHyphae with dichotomous branching at 45°C.\n\n\nAll suggest the diagnosis of Aspergillus fumigatus.\n\n\nMost common\xa0type of fungal infection of the nose and paranasal sinuses are due to Aspergillus.\nThe most common\xa0fungus causing an allergy is aspergillus.\nAspergillus\xa0has septate hyphae that branch typically at 45°C (V-shaped).', 'role': 'assistant'}]