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