We have three blocks, A, B and C. Block A has one medium yellow square and a medium blue square. Below the medium blue square is the medium yellow square. Then, there is block B which contains two medium yellow squares. Medium yellow square number one is below medium yellow square number two. Finally, below block A we have block C which is below block B. It has one medium black square. This block also has a medium yellow square. The medium black square is touching the bottom edge of this block. It is below the medium yellow square.
What is above the black object? a blue shape or a medium yellow square?
blue shape medium yellow square  both of them none of them