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': 'Ventrolateral cordotomy for relief of pain in right lower limb is by cutting the: \nSelect and explain. \nA. Left ventral spinothalamic tract, B. Left lateral spinothalamic tract, C. Right ventral spinothalamic tract, D. Right lateral spinothalamic tract', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pain and temperature is carried by lateral spinothalamic tract. This tract cross obliquely to the\xa0opposite side within one spinal segment and ascend in the opposite anterolateral white column as the\xa0lateral spinothalamic tract. So, pain from right leg relieved by cutting left lateral spinothalamic tract.', 'role': 'assistant'}]