We have three blocks, A, B and C. Block A has a medium blue square. Below block A there is block B. It contains two medium yellow squares. Below medium yellow square number two which is below a medium blue square there is medium yellow square number one. It is touching the bottom edge of this block. It is below the medium blue square. Above block A there is block C. It contains a medium yellow square. There is also a medium black square in this block. The medium black square is below the medium yellow square.
Which object is below a medium square? the medium blue square that is in block A or the medium blue square that is in block B?
the medium blue square  that is in block A the medium blue square  that is in block B both of them none of them