There are three blocks. We call them A, B and C. Two medium yellow squares are in block A. A medium blue square is touching the bottom edge of this block. A medium black square is below medium yellow square number one and medium yellow square number two. The medium blue square is below medium yellow square number two , the medium black square and medium yellow square number one. Then, there is block B. It contains two medium yellow squares. Below medium yellow square number two and a medium black square there is medium yellow square number one. It is touching the bottom edge of this block. Below medium yellow square number two is the medium black square. Block C is below block B and above block A. It contains a medium yellow square.
Which object is below a medium yellow square? the medium black square that is in block A or the medium black square which is in block B?
the medium black square  that is in block A the medium black square  which is in block B both of them none of them