Nick (sprint cyclist), Kevin (recreational athlete walking 3 to 5 miles daily), and Meg (distance swimmer) are thinking about your last comment on creatine's effect on rapid energy and are trying to decide who would benefit from this most. Which of these athletes depends on bursts of rapid energy to perform his or her activity? a. All three, because they're all engaged in sports that require rapid use of energy. b. Nick and Meg, but not Kevin, who's a recreational athlete. c. Nick, because sprint cycling is a high-intensity, short-duration activity. d. Kevin, because walking 3 to 5 miles is a high-intensity, short-duration activity.