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