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