Mark against the correct answer in the following:

Mark $(\sqrt{ })$ against the correct answer in the following:

The general solution of the $D E \frac{d y}{d x}+y \tan x=\sec x$ is

A. $y=\sin x-C \cos x$

B. $y=\sin x+C \cos x$

C. $y=\cos x-C \sin x$

D. None of these