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: Medicine
[{'content': 'Which of the following immunoglobulins can crosses placenta: \nSelect and explain. \nA. IgA, B. IgM, C. IgG, D. IgD', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (IgG): IgG is the only maternal immunoglobulin, that is normally transpoed across the placenta and provides natural passive immunity in the newborn.', 'role': 'assistant'}]