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