Describe the surface in three-dimensional space given by the equation x2+ y2+ z2 -8z=9 O a. A sphere with center (0,0,4) and radius 3. O b.A sphere with center (0,0, – 4) and radius 3. OC. A sphere with center (0,0,4) and radius 5 O d.A sphere with center (0,0, - 4) and radius 5. O e. None of the other choices.

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