Latest GRE Aptitude Question SOLUTION: The minimal distance between any point on the sphere (x-2)^2 + (y-1)^2 + (z-3)^2 = 1 and any point on the sphere (x+3)^2 + (y-2)^2 + (z-4)^2 = 4 is (A) 0 (B) 4 (C) Sqrt(27) (D) 2