$7\mathrm{.}05\mathrm{.}3$ A $\frac{1}{{10}^{th}}$ scale model of an airplane is tested in a wind tunnel. The Reynolds number of the model is the same as that of the full scale airplane. The velocity in the wind tunnel is then

A $\frac{1}{10}$ th that of the full scale airplane

B The same as that of the full scale airplane

C $10$ times that of the full scale airplane

D $100$ times that of the full scale airplane