This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'The subcostal angle during pregnancy is: \nSelect and explain. \nA. 85deg, B. 95deg, C. 105deg, D. 75deg', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The lower ribs flare out,the subcostal angle increases from 68deg to 103deg,the transverse diameter of the chest increases by 2 cm and the diaphragm rises by about 4 cm in pregnancy. Refer page no 80 of text book of obsteics,sheila balakrishnan,2 nd edition.', 'role': 'assistant'}]