There are three blocks. We call them A, B and C. Block A contains a medium yellow square. Below block A there is block B with one medium yellow square in it. The medium yellow square is touching the bottom edge of this block. The medium yellow square is below a medium black square. Below block B there is block C with one medium blue square in it. A medium yellow square is below the medium blue square.
Which object is below a medium yellow square? the medium yellow square that is touching the bottom edge of a block or the medium black square?
the medium yellow square  that is touching the bottom edge of a block  the medium black square  both of them none of them