There are three blocks, A, B and C. There is one medium blue square in block A. Below a medium black square there is the medium blue square. Below the medium black square is a medium yellow square. Below the medium yellow square is the medium blue square. Then, there is block B which has a medium blue square. Finally, we have block C above block A and below block B. It has a medium yellow square.
What is below the black object? a medium yellow square that is in block C or a medium yellow square which is in block A?
medium yellow square  that is in block C medium yellow square  which is in block A both of them none of them