If the angle of reflection of a plane mirror is $35^{\circ}$, at what angle would the ray of light be incident on the surface ?

Question

$\begin{array}{1 1} (a)\; 25^{\circ} \\ (b)\; 30^{\circ} \\ (c)\; 45^{\circ} \\ (d)\; 35^{\circ} \end{array}$