There are three blocks. We call them A, B and C. There are a medium black square and one medium blue square in block A. The medium black square is touching the bottom edge of this block. This shape is below the medium blue square. To the right of block A we have block B with one medium black square in it. Above block A there is block C which contains a medium yellow square and a medium black square. The medium yellow square is touching the bottom edge of this block. A medium blue square is below the medium black square.. Below the medium black square and the medium blue square there is the medium yellow square.
Which object is above a medium blue square? the medium black square which is in block B or the medium black square which is in block C?
the medium black square  which is in block B the medium black square  which is in block C both of them none of them