Runners on the track team at Sully Middle School have an average time of 7.2 seconds for the 50-meter dash, while runners on the track team at Mikey Middle School have an average time of 7.9 seconds for the 50-meter dash. Based on this information, what inference can be made about the runners at both Sully Middle School and Mikey Middle School?

A. Runners at Sully Middle School train harder for the 50-meter dash than runners at Mikey Middle School.
B. Runners at Sully Middle School run faster on average for the 50-meter dash than runners at Mikey Middle School.
C. Runners at Sully Middle School like the 50-meter dash more than runners at Mikey Middle School.
D. There are more runners for the 50-meter dash at Sully Middle School than there are at Mikey Middle School.