There are three blocks. We call them A, B and C. One medium yellow square is in block A. A medium blue square is touching the bottom edge of this block. It is below the medium yellow square. Then, there is block B which has one medium black square. Finally, to the right of block B we have block C. It is above block A. It has one medium black square and one medium blue square. Below the medium blue square is the medium black square.
Which object is below a medium black square? the medium blue square that is touching the bottom edge of a block or the medium yellow square?
the medium blue square  that is touching the bottom edge of a block  the medium yellow square  both of them none of them