We have two blocks. We call them A and B. Block A has a medium black square, one medium yellow square and a medium blue square. Below the medium blue square is the medium yellow square. Below the medium blue square and the medium yellow square is the medium black square. Block B is above block A. It contains two medium black squares. This block also contains a medium yellow square. Medium black square number one is below medium black square number two and the medium yellow square. Medium black square number two is below the medium yellow square.
Which object is below a medium black square? the medium yellow square that is in block A or the medium yellow square that is in block B?
the medium yellow square  that is in block A the medium yellow square  that is in block B both of them none of them