We have three blocks. We call them A, B and C. Block A is above B. Block C is to the left of A. Block A has one medium black square. Block B has a medium blue square. Block C has three medium blue squares. This block also contains one medium yellow square. This shape is below medium blue square number three. Below medium blue square number three , medium blue square number two and the medium yellow square is medium blue square number one. Medium blue square number two is below medium blue square number three.
What is below the black object? a medium yellow square or a medium blue square?
medium yellow square  medium blue square  both of them none of them