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