We have three blocks, A, B and C. There are a medium black triangle and one big blue circle in block A. To the right of the big blue circle there is the medium black triangle. Below block A is block B with one medium blue square and one small yellow circle in it. To the right of the small yellow circle is the medium blue square. Finally, there is block C which is above block B. It contains one big blue square, one medium blue square and one small black square. There is also a medium black square in this block. The big blue square is below and to the right of the medium black square. The medium blue square is touching the right edge of this block. It is above and to the right of the small black square.. The big blue square is to the left of the small black square.
Which object is below a medium blue square? the yellow object or the medium black square?
the yellow object the medium black square  both of them none of them