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