There are three blocks. We call them A, B and C. A medium blue square and a medium black square are in block A. Below the medium black square there is the medium blue square. Above block A we have block B with a medium yellow square in it. Above block B there is block C which contains one medium blue square. It also contains a medium yellow square. Below the medium blue square there is a medium black square. The medium yellow square is below the medium black square and the medium blue square.
Which object is above a medium yellow square? the medium blue square that is in block A or the medium blue square which is in block C?
the medium blue square  that is in block A the medium blue square  which is in block C both of them none of them