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