There are two blocks. We call them A and B. There are a medium blue square and one medium black square in block A. Below the medium black square is the medium blue square. Block B is above block A. It contains a medium blue square and a medium yellow square. There is also a medium black square in this block. The medium blue square is touching the bottom edge of this block. Below the medium black square is the medium yellow square. Below the medium black square and the medium yellow square there is the medium blue square.
Which object is below a medium 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