In Options A you have a recess between the two disks and in Option B you have two recesses. In my diagram I had a raised, rotated rectangle (I was thinking of a read/write head for an old reel-to-reel tape drive unit.) between the disk with the corners cut away by the disk centers This is based on the light coming from the left side and the edge between the disks toward the sun is highlighted and on the opposite side is in shadow. You see the same sunlight surface on the upper edge of the rectangle in the upper disk.
As far as the element at the center top of the unit, I prefer option A. On the Celebration Reel at 1.32 you can see the bottom, flat surface, of the triangular element. I did not originally catch the screw at the top but once I saw it in option A that make sense to me.
