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: Anatomy
[{'content': 'Muscle of expiration is/are -a) Diaphragmb) Internal intercostalc) External intercostald) Rectus Abdominis \nSelect and explain. \nA. ac, B. bd, C. cd, D. ab', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Muscles of expiration\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Quite breathing- Elastic recoil of lung and chest wall.\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Forced expiration- \no\xa0\xa0 Internal intercostal\no\xa0\xa0 Intercostalis intimi\no\xa0\xa0 Transversus thoracis\no\xa0\xa0 Serratus posterior inferior\no\xa0\xa0 Subcostalis\no\xa0\xa0 Latissimus dorsi\no\xa0\xa0 Abdominal muscles\n§\xa0 Rectus abdominis\n§\xa0 Transversus abdominis\n§\xa0 Internal oblique\n§\xa0 External oblique', 'role': 'assistant'}]