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