Ari decides to run 8.5 kilometers this weekend. He jogs 8.9 laps around the running track on Saturday. How many more kilometers does he need to jog on Sunday?
A. y = 8.9 × 0.4
B. y = 8.5 × 0.4
C. y = 8.5 ÷ 0.4
D. y = 8.9 ÷ 0.4
