This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower Extremity, Subject name: Anatomy
Femoral triangle base is formed by: 
Select and explain. 
A. Medial border of sartorius, B. Inguinal ligament, C. Medial border of adductor longus, D. Iliacus
B: Inguinal ligament
Answer: B: Inguinal ligament 
Explanation: Ans. B Inguinal ligamentRef: Gray's Basic Anatomy E-book, P 280FEMORAL TRIANGLEA triangular depressed area situated in the upper part of the medial aspect of the thigh just below the inguinal ligmanent.BOUNDARIESSuperiorly (base): The inguinal ligamentLaterally: Medial border of sartoriusMedially: Medial border of adductor longusApex: Continuous with adductor canalAnterior wall: Fascia lataPosterior wall: Consists of iliopsoas, pectineus and adductor longus from lateral to medial side.