Connor Was His School's Basketball Star All Through Elementary School

Connor was his school's basketball star all through elementary school and through sixth grade. This year, in seventh grade, he falls at least once a game and he can't make the "money shots" that, only a year ago, had been so easy for him to deliver. His coach is not a developmentalist; his coach gives advice from a different lens. Most likely the coach told Connor:

A) You better get to the gym and practice; this only happens when players cut corners in practice.
B) Give your body time to readjust to its new proportions.
C) neither a nor b
D) both a and b