There are three blocks, A, B and C. A medium yellow square is in block A. The medium yellow square is touching the bottom edge of this block. A medium black square is also in this block. The medium yellow square is below the medium black square. Below block A is block B which contains a medium black square. Below block A there is block C with two medium yellow squares in it. Medium yellow square number one is touching the bottom edge of this block. It is below medium yellow square number two.
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