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: Pathology
[{'content': 'Oral manifestations of infectious mononucleosis is most commonly: \nSelect and explain. \nA. Bluish red spots opposite maxillary molar, B. Pseudomembrane on gingiva, C. Pinpoint petechiae on the palate, D. Gingival hyperplasia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]