We have three blocks, A, B and C. A medium black square, a medium yellow square and one medium blue square are in block A. The medium black square is touching the bottom edge of this block. Below the medium blue square is the medium yellow square. Below the medium blue square and the medium yellow square there is the medium black square. Then, we have block B with two medium black squares in it. Medium black square number one is below medium black square number two. Below blocks B and A there is block C which contains one medium black square.
Which object is below a medium square? the medium black square that is touching the bottom edge of a block or the yellow thing?
the medium black square  that is touching the bottom edge of a block  the yellow thing both of them none of them