If $\sin \theta + \cos \theta = \sqrt 2 \cos (90^{\circ}- \theta)$ then $\cot \theta$ is

Question

$\begin{array}{1 1}(A) \; \sqrt 2 +1 \\(B)\; \sqrt 2 -1 \\(C)\;1- \sqrt 2 \\(D)\;none\;of\;the\;above \end{array}$