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