We have three blocks. We call them A, B and C. A medium blue square is in block A. Then, there is block B. It contains two medium black squares. Below medium black square number two is medium black square number one. It is below a medium yellow square which is below medium black square number two. Block C is below block B and to the right of block A. It contains a medium yellow square.
Which object is below a medium black square? the medium yellow square which is in block B or the medium yellow square that is in block C?
the medium yellow square  which is in block B the medium yellow square  that is in block C both of them none of them