[单选题]
An object is moving with c i64jtg+;z6rk f pux-vogj 783pnko 4oonst:t 1c dp1 )xit:b3ghmfant non-zero acceleration in the +x axis. The velocity versus time graph of this object fd1ibg)x :c:3hp1tm tis
A. a horizontal straight line.
B. a vertical straight line.
C. a straight line making an angle with the time axis.
D. a parabolic curve.