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, depends 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: Golgi tendon organs are in series with the muscle fibers, they are stimulated by both passive stretch\xa0and\xa0active\xa0contraction\xa0of the\xa0muscle,\xa0when\xa0 tension\xa0increases\xa0inside muscle.', 'role': 'assistant'}]