$∫\frac{1-sinx}{cos^2x}dx$ is equal to :

$tanx-secx+C$ Where C is the constant of integration $cotx-cosecx+C$ Where C is the constant of integration $tanx+secx+C$ Where C is the constant of integration $cotx+cosecx+C$ Where C is the constant of integration

$tanx-secx+C$ Where C is the constant of integration