There are three blocks, A, B and C. Block B is below block C and it is above block A. Block A contains a medium yellow square. Block B has a medium black square and one medium yellow square. The medium black square is touching the bottom edge of this block. It is below the medium yellow square. Block C has two medium black squares. Medium black square number one is below medium black square number two.
What is below the thing that is touching the bottom edge of a block? a medium yellow square that is in block B or a medium yellow square which is in block A?
medium yellow square  that is in block B medium yellow square  which is in block A both of them none of them