We have three blocks. Lets call them A, B and C. Block A has one medium yellow square. Then, we have block B. It contains a medium yellow square. Block C is above both blocks B and A. It contains two medium black squares. Medium black square number one is below a medium yellow square and medium black square number two. Medium black square number two is below the medium yellow square.
Which object is above a medium yellow 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