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