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

A man in a black sweater quickly performs a rubik cube challenge as the timer ticks. a man

Available options:
(a). is frozen and then does the rubik's cube trick.;
(b). in a black sweater solves a rubik's cube correct in 2 seconds.;
(c). in a black sweater performs a rubik's cube puzzle.;
(d). sits next to him watching.;
(d).