This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Muscles of Lower Limb, Subject name: Anatomy
Pes anserinus includes following three muscles EXCEPT 
Select and explain. 
A. Semitendinosus, B. Semimembranosus, C. Gracilis, D. Saorius
B: Semimembranosus
Answer: B: Semimembranosus 
Explanation: Tendons of one muscle from each of the three compaments of the thigh: saorius (anterior), gracilis (medial), and semitendinosus (posterior) are inseed into the upper pa of the medial surface of the tibia. Anserine bursa is at their tibial attachment separating each other near their inseion and also from the tibial collateral ligament. fig:-attachment of muscles at tibia