We have three blocks, A, B and C. There is one medium yellow square in block A. Block B is above block A. It has one medium blue square, a medium black square and a medium yellow square. The medium blue square is touching the bottom edge of this block. Below the medium yellow square there is the medium black square.. The medium blue square is below the medium yellow square and the medium black square. Finally, there is block C to the right of block B. It contains a medium black square.
Which object is below a medium yellow square? the medium black square that is in block C or the medium black square that is in block B?
the medium black square  that is in block C the medium black square  that is in block B both of them none of them