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