There are two blocks, A and B. Block A is above B. Block A has three medium yellow squares. It also contains a medium black square. Medium yellow square number one is below the medium black square , medium yellow square number two and medium yellow square number three. Medium yellow square number three is below the medium black square. Medium yellow square number two is below the medium yellow square number three. Block B has a medium blue square.
Which object is above a medium yellow square? the medium blue square or the medium black square?
the medium blue square  the medium black square  both of them none of them