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