Problem regarding dimensional analysis

Question

A 1/25 model of a ship is to be tested for estimating the wave drag. If the speed of the ship is

 1 m/s, then the speed at which the model must be tested is

  (a)  0.04 m/s           (b)  0.2 m/s

  (c)  5.0 m/s             (d)  25.0 m/s