In the circuit shown here , the point ' C ' is kept connected to point ' A ' till the current flowing through the circuit becomes constant . Afterward ,suddenly , point ' C ' is disconnected from point ' A ' and connected to point ' B ' at time t=0 . Ratio of the voltage across resistance and the inductor at $\;t=\large\frac{L}{R}\;$ will be equal to :

Question

$(a)\;\large\frac{e}{1-e}\qquad(b)\;1\qquad(c)\;-1\qquad(d)\;\large\frac{1-e}{e}$