In a certain system of units, 1 unit of time is 5 seconds, 1 unit of mass is 20 kg and 1 unit of length is 10 m. In this system one unit of length is 10m. In this system of power will correspond to

Question

$\begin{array}{1 1} (a) \;16\;walt \\ (b) \;1/16 \;walt \\ (c) \;25\;walt \\ (d) \;\text{None of these} \end{array} $