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