We have three blocks. We call them A, B and C. Block C is above A. Block B is below C. Block A has one medium yellow square. Block B has one medium blue square, one medium black square and one medium yellow square. Below the medium yellow square is the medium black square. The medium blue square is touching the bottom edge of this block. It is below the medium black square and the medium yellow square. And block C contains a medium yellow square.
Which object is below a medium yellow square? the medium black square or the blue object that is touching the bottom edge of a block?
the medium black square  the blue object that is touching the bottom edge of a block  both of them none of them