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