We have three blocks. We call them A, B and C. Block A is below B. Block B is above C. Block A contains a medium black square. A medium blue square is below the medium black square. Block B contains one medium black square. And block C contains one medium yellow square. This block also contains a 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 black square which is in block A or the medium black square that is in block C?
the medium black square  which is in block A the medium black square  that is in block C both of them none of them