We have three blocks, A, B and C. Block A contains a medium black square. Below a medium blue square is the medium black square. Then, we have block B with a medium black square in it. Finally, we have block C to the right of both blocks B and A. It has two medium yellow squares. Medium yellow square number one is below medium yellow square number two.
Which object is below a medium 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