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