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