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