We have three blocks, A, B and C. One medium yellow square is in block A. Below block A is block B which has a medium yellow square and one medium black square. A medium blue square is touching the bottom edge of this block. Below the medium black square there is the medium yellow square. The medium blue square is below the medium black square and the medium yellow square. To the right of block B there is block C with a medium black square in it.
Which object is below a medium yellow square? the medium black square that is in block B or the medium black square that is in block C?
the medium black square  that is in block B the medium black square  that is in block C both of them none of them