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: Surgery
[{'content': 'Petechiae is? \nSelect and explain. \nA. Pin point hemorrhage of the skin, B. Hemorrhagic patch of the skin with size < 0.5 mm in diameter, C. Hemorrhagic patch of the skin with size 0.5 to 1 mm in diameter, D. Irregular hemorrhagic patch in the skin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]