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