[单选题]
If you are driving 72 km/h along a straight road and you look to the sidemlxhi 9p);p6f for 4tudpi fbq/2fp 2-h +(q.0 s, how far do you tratpf/bd+ h-upq 22q( fivel during this inattentive period?
A. $18 \; m$
B. $20 \; m$
C. $40 \; m$
D. $80 \; m$
