Regarding the popliteal fossa, which of the following statements is true?

• A. the common peroneal nerve slopes downwards lateral to the biceps tendon
• B. the sural nerve is a cutaneous branch of the common peroneal nerve
• C. the middle genicular artery of the popliteal artery supply the cruciate ligaments
• D. the popliteus muscle is supplied by a branch of the common peroneal nerve
• E. the recurrent genicular nerve is a branch of the tibial nerve