We have three blocks. We call them A, B and C. Block A has one medium black square. Above block A there is block B which has one medium blue square. Below block A there is block C which contains two medium black squares. Medium black square number one is below medium black square number two. A medium yellow square is below medium black square number two and medium black square number one.
What is below the blue object? a medium black square number two or a medium black square number one?
medium black square  number two medium black square  number one both of them none of them