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