The Position Y of a Particle Moving Along the Y

Multiple Choice

The position y of a particle moving along the y axis depends on the time t according to the equation y = at - bt².The dimensions of the quantities a and b are respectively:

A) L²/T, L³/T²
B) L/T², L²/T
C) L/T, L/T²
D) L³/T, T²/L
E) none of these