Points: 0 of 1 Give a geometric description of the set of points in space whose coordinates satisfy the given pairs of equations x +y+2 = 9, y=0 Choose the correct answer below. A. The solid lower hemisphere cut from the sphere x + +z =9 by the xz-plane (the plane y = 0); the hemisphere has radius 3 and is centered at (0,0,0) O B. The circle x + z =9, y = 0, together with its interior O C. The hollow lower hemisphere cut from the sphere x +y +z =9 by the xz-plane (the plane y = 0); the hemisphere has radius 3 and is centered at (0,0,0) O D. The circle x + z =9 in the xz-plane