We have two blocks, A and B. Block A is below B. Block A contains two medium black squares. There is also one medium blue square in this block. Medium black square number one is touching the bottom edge of this block. A medium yellow square is below the medium blue square. Medium black square number two is below the medium blue square. Medium black square number one is below the medium blue square , medium black square number two and the medium yellow square. Block B has one medium black square.
Which object is below a medium black square? the medium yellow square or the medium blue square?
the medium yellow square  the medium blue square  both of them none of them