Çözüldü Space Geometry - Intersection of Sphere and Plane

If O is a fixed point on a plane M, What is the set of all points in space that are 5 inches from O and 3 inches from plane M?

A) A circle
B) A square
C) Two circles
D) A sphere
E) A cylinder

https://1filedownload.com/mathematics-level-1-testsat-2/
(son soru)

Solution: https://qa.pwntestprep.com/post/123511950996/if-o-is-a-fixed-point-on-a-plane-m-what-is-the
"Think of it in terms of intersections. You have all points 3 inches from plane M: that’s 2 more planes, parallel to plane M, 3 inches away from it on either side. So you have 3 parallel planes. Then you have all points 5 inches from O. That’s a sphere. The sphere is large enough that it’ll intersect both of the new planes. When a sphere intersects a plane, it makes a circle. Since there are 2 planes in question, you’ll get 2 circles."