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: Orthopaedics
[{'content': 'True about carpal tunnel syndrome -a) Occur in pregnancyb) Affects medial 3 1/2 fingerc) Associated with Hypothyroidismd) Froment sign positivee) Median nerve involvement is present \nSelect and explain. \nA. ace, B. bde, C. cde, D. ade', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Carpal tunnel syndrome can occur in pregnancy and hypothyroidism.\nIt affects lateral 3 and half\xa0fingers because median nerve supplied lateral 3\xa0and half fingers.\nFroment sign is seen in ulnar nerve injury.', 'role': 'assistant'}]