There are three blocks. We call them A, B and C. Block A contains one medium black square. The medium black square is touching the bottom edge of this block. A medium yellow square is also in this block. Below the medium yellow square is the medium black square. Block B is to the right of block A. It has one medium black square and one medium yellow square. The medium black square is touching the bottom edge of this block. It is below the medium yellow square. Below block B there is block C which contains one medium black square.
Which object is to the left of 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