We have three blocks. We call them A, B and C. There are a medium black square and a medium yellow square in block A. The medium black square is below a medium blue square and the medium yellow square. The medium blue square is below the medium yellow square. Then, we have block B with one medium black square in it. Finally, to the right of block A we have block C. It is to the left of block B. It contains one medium yellow square.
Which object is to the left of a medium black square? the medium yellow square which is in block A or the medium yellow square which is in block C?
the medium yellow square  which is in block A the medium yellow square  which is in block C both of them none of them