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