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