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