There are two blocks, A and B. Block A is below B. Block A contains a medium yellow square, one medium black square and one medium blue square. The medium yellow square is touching the bottom edge of this block. This shape is below the medium black square and the medium blue square. Below the medium blue square there is the medium black square. Block B has two medium yellow squares. Medium yellow square number one is touching the bottom edge of this block. This shape is below medium yellow square number two.
Which object is above a medium yellow square? the black object or the medium blue square?
the black object the medium blue square  both of them none of them