Please choose the correct ending to complete the given sentence: BMX: The man wearing the grey shirt describes different techniques used in bmx competition while clips of bmx riders performing different moves. as the man wearing the grey shirt

Ending1: speaks clips of bmx riders perform additional maneuvers on the track. Ending2: describes the moves and moves, he removes his helmet, loosens his helmet and begins speaking briefly. Ending3: describes traditional athlete technique in extreme athlete related times, a shot from a track gets shown shown and the gate opens. Ending4: discusses the techniques use by bmx riders, the closing screen is once again black and white.

Answer format: ending1/ending2/ending3/ending4