There are three blocks. We call them A, B and C. Block A contains two medium yellow squares. Medium yellow square number one is touching the bottom edge of this block. It is below medium yellow square number two. Block B is to the left of block A. It has a medium black square and a medium yellow square. Below the medium yellow square is the medium black square. To the right of block A there is block C. It contains two medium black squares. Below medium black square number two is medium black square number one.
Which object is to the left of a medium yellow square? the medium black square that is in block B or medium black square number two?
the medium black square  that is in block B medium black square  number two both of them none of them