We have three blocks. Lets call them A, B and C. Block A has a medium yellow square. To the left of block A is block B with a medium blue square in it. A medium black square is below the medium blue square. A medium yellow square is touching the bottom edge of this block. This shape is below the medium black square and the medium blue square. Finally, there is 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 yellow square? the medium blue square or the medium black square?
the medium blue square  the medium black square  both of them none of them