A differential equation of the form `dy/dx+Py=Q` is said to be a linear differential equation. Integrating factor of this differential equation is `e^(intPdx)` and its solution is given by `y.e^(int Pdx)=int (Qe^(int Pdx))dx+c`. Answer the question:Solution of differential equation `(1+y^2)dx+(x-e^(-tan^-1y)dy=0` is (A) `y=tan^-1x+c` (B) `ye^(tan^-1x)=tan^-1x+c` (C) `xe^(tan^-1y)=tan^-1y+c` (D) none of these