Let P be the image of the point (3,1,7) with respect to the plane $$x - y + z = 3$$. Then the equation of the plane passing through P and containing the straight line $$\frac{x}{1} = \frac{y}{2} = \frac{z}{1}$$ is

A

$$x + y - 3z = 0$$

B

$$3x + z = 0$$

C

$$x - 4y + 7z = 0$$

D

$$2x - y = 0$$