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': 'The properties of fast twitch muscle area) Extensive sarcoplasmic reticulumb) Extensive blood supplyc) Large glycolytic pathwayd) Abundant mitochondriae) Made up of large number of small fibres with some long fibre muscles. \nSelect and explain. \nA. ac, B. bc, C. ad, D. b', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Characters of fast twitching muscles.\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Mitochondria- low\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Blood supply- normal\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Fibres- Large\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Sarcoplasmic reticulum- extensive\nGlycolytic activity- high', 'role': 'assistant'}]