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: Physiology
[{'content': 'True about lateral corticospinal tract \nSelect and explain. \nA. Crossed, B. Uncrossed, C. Stops in midthoracic region, D. Crossed at midspinal level', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pyramids of medulla are made by crossing fibers of the lateral corticospinal tract. About 80% of lateral corticospinal tract cross.', 'role': 'assistant'}]