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