There are three blocks. Lets call them A, B and C. One medium black square is in block A. Then, there is block B with a medium black square, one medium blue square and a medium yellow square in it. Below the medium yellow square and the medium blue square is the medium black square. This object is touching the bottom edge of this block. Below the medium yellow square there is the medium blue square. Block C is above blocks A and B. It contains one medium yellow square.
Which object is below a medium yellow square? the medium blue square or the medium black square that is touching the bottom edge of a block?
the medium blue square  the medium black square  that is touching the bottom edge of a block  both of them none of them