This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdominal wall ,Inguinal and Femoral region, Subject name: Anatomy
[{'content': 'Base of femoral triangle is formed by \nSelect and explain. \nA. Inguinal ligament, B. Medial border of saorius, C. Medial borer of adductor longus, D. Iliacus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Base of femoral triangle is inguinal ligament which is aponeurosis of external oblique muscle. Medial border of adductor longus forms the medial boundary. Medial border of Saorius forms the lateral boundary. Floor is formed by adductor longus,pectineus and iliacus. Femoral aery, femoral vein and lymphatics are involved in femoral sheath.', 'role': 'assistant'}]