9. Henry and Greg practiced playing basketball after school. Greg practiced 3 times as many minutes as Henry. Which statement could be true about the number of minutes each boy practiced? A Greg practiced for 30 minutes. Henry practiced for 90 minutes. B. Henry practiced for 30 minutes. Greg practiced for 90 minutes. c. Henry practiced for 120 minutes. Greg practiced for 30 minutes. D. Greg practiced for 120 minutes. Henry practiced for 30 minutes.