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