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