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