[单选题]
You are standing in cnxl:py 8-5h ta moving bu 4o22jcujlli, s, facing forward, and you suddenly fall forward. You can imply from this that th2o il2c4jj,ul e bus's
A. velocity decreased.
B. velocity increased.
C. speed remained the same, but it's turning to the right.
D. speed remained the same, but it's turning to the left.
