With respect to the posterior compartment of the thigh:

• A. blood supply is mainly from the femoral artery
• B. the sciatic nerve lies lateral to the long head of biceps
• C. the long head of biceps is supplied by the common peroneal nerve
• D. the hamstrings form the apex of the popliteal fossa
• E. semimembranosus arises in common with the long head of biceps