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