There are three blocks, A, B and C. Block A contains one medium black square. Block B is to the right of block A. It contains one medium black square, one medium blue square and a medium yellow square. Below the medium blue square and the medium yellow square is the medium black square. The medium blue square is below the medium yellow square. Finally, there is block C which is below block B. It contains one medium black square.
Which object is to the right of a medium black square? the medium blue square or the yellow object?
the medium blue square  the yellow object both of them none of them