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': 'Golgi tendon apparatus conveys message to CNS depending upon \nSelect and explain. \nA. Tension in muscle, B. Length of muscle, C. Rapidity of contraction, D. Blood supply', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Detection of Muscle length- Muscle spindle\nDetection of Muscle tension- Golgi tendon organ', 'role': 'assistant'}]