Give a geometric description of the set of points whose coordinates satisfy the given conditions.x2 + y2 ? 1, z = -2
A. All points within the parabola x2 + y2 = 1 in the plane z = -2
B. All points on the cylinder with radius 1 along the z-axis
C. All points on or outside of the circle x2 + y2 = 1 and in the plane z = -2
D. All points on or within the circle x2 + y2 = 1 and in the plane z = -2
Answer: D
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