A flywheel is fitted to the crankshaft of an engine having ' \(E\) ' amount of indicated work per revolution and permissible limits of co-efficients of fluctuation of energy and speed as \(K_{e}\) and \(K_{s}\) respectively. The kinetic energy of the flywheel is then given by

(a) \(\frac{2 K_{e} E}{K_{s}}\)

(b) \(\frac{K_{e} E}{2 K_{s}}\)

(c) \(\frac{K_{e} E}{K_{s}}\)

(d) \(\frac{K_{e} E}{2 K_{s}}\).