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': 'Senile cardiac amyloidosis associated protein is ? \nSelect and explain. \nA. Transthyretin, B. ANP, C. Beta 2 microglobin, D. Gelsolin', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Transthyretin", 'role': 'assistant'}]