[单选题]
98.15: A freely fallie s zzzedn 9*b ne o-7sotxbo 6z6ni7.2/l/w+ung object is found tosik/6lu r6;8 trpb ,pc5a)qhr be moving downward at 18 m/s. If it continues to fall, two seconds later the objecu qa)/ php66 ibrrs8, t;k5rlct would be moving with a speed of
A. 8.0 m/s
B. 10 m/s
C. 18 m/s
D. 38 m/s
E. 180 m/s
