There are three blocks, A, B and C. A medium blue square and one medium yellow square are in block A. 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. It has one medium blue square. To the right of block B there is block C with a medium black square and one medium blue square in it. The medium black square is below the medium blue square.
Which object is to the right of a medium blue square? the medium black square or the medium yellow square?
the medium black square  the medium yellow square  both of them none of them