[单选题]
02.02: The graph represents pjoxa(,h8ix)e+;y dnthe relatap:z/ d m 0yuvl)v7y1aionship between distance and time for an object that is/v)d y:zl0auv1ya p m7 moving along a straight line. Between what times did the object have a non-zero acceleration?
A. 0 s only
B. 0 s to 5 s
C. 5 s to 8 s
D. 0 s to 8 s
E. the object was not accelerating at any time