A:as=1.2 m/s2,aQ=0.2 m/s2
B:as=0.2 m/s2,aQ=1.2 m/s2
C:as=1.2 m/s2,aQ=1.2 m/s2
D:as=0.2 m/s2,aQ=0.2 m/s2