For Figure D from the DAT Bootcamp PAT Test #6, how do we know that the cube in the far row in the middle between the 2 level column and 1 level column is actually a cube? We can't see if there is or isn't a line, so I thought we assumed there wasn't a cube there.
Same for Figure C between the two 2 level columns.
Same for Figure C between the two 2 level columns.