Let C be the circle in the yz-plane whose equation is (y - 3)^2 + z^2 = 1. If C is revolved around the z-axis, the surface generated is a torus. What is the equation of this torus?
(A)x^2 + y^2 + z^2 + 8 = 6y (B)(x^2 + y^2 + z^2)^2 = 8 + 36(x^2 + z^2) (C)(x^2 + y^2 + z^2 + 8)^2 = 36(x^2 + z^2) (D)(x^2 + y^2 + z^2 + 8)^2 = 36(x^2 + y^2)
D