There are three blocks, A, B and C. Block A contains a medium yellow square. Above block A we have block B with one medium yellow square in it. It also contains one medium black square. The medium yellow square is below the medium black square. To the left of block A there is block C with one medium yellow square in it. The medium yellow square is touching the bottom edge of this block. This block also has a medium black square. Below the medium black square there is the medium yellow square.
Which object is to the left of 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