There are three blocks. We call them A, B and C. Block A is to the right of block B and it is above block C. Block A has one medium blue square and one medium yellow square. The medium blue square is below the medium yellow square. Block B has a medium blue square and one medium black square. Below the medium black square there is the medium blue square. Block C has one medium blue square.
What is below the yellow object? a medium blue square or a black object?
medium blue square  black object both of them none of them