There are two blocks, A and B. There is a medium black square in block A. A medium blue square is touching the bottom edge of this block. It is below the medium black square. Block B is below block A. It has two medium blue squares. There is also a medium yellow square in this block. Medium blue square number one is touching the bottom edge of this block. Below the medium yellow square there is medium blue square number two. Medium blue square number one is below the medium yellow square and medium blue square number two.
Which object is below a medium blue square? the medium yellow square or the medium black square?
the medium yellow square  the medium black square  both of them none of them