Multi-select problem: How does the next paragraph end?

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

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