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': 'Partial or complete obstruction of some part of the C.V.S by a foreign body transported by the blood stream is termed as: \nSelect and explain. \nA. Thrombosis, B. Coagulation, C. Ischaemia, D. Embolism', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]