Describe the set of points in space whose coordinates satisfy the given inequalities or combinations of equations and inequalities. a. 1sx2+y2+22s4 b. x2+y2+2254, 220 a. Choose the correct answer below. 0 A. The solid ball of radius 2 centered at (0,0,0) with the interior of the solid ball of radius 1 centered at (0,0,0) removed 0 B. The sphere of radius 2 centered at (0,0,0) together with the solid ball of radius 1 centered at (0,0,0) 0 C. The sphere of radius 2 centered at (0,0,0) together with the sphere of radius 1 centered at (0,0,0) 0 D. The solid ball of radius 2 centered at (0,0,0) with the sphere of radius 1 centered at (0,0,0) removed