There are three blocks, A, B and C. Block A is above block C and it is to the right of block B. Block A contains two medium black squares. Medium black square number one is below a medium yellow square which is below medium black square number two. It is below medium black square number two. Block B has three medium black squares. Medium black square number one is below medium black square number three and medium black square number two. Medium black square number two is below medium black square number three. And block C contains a medium blue square.
What is above the blue object? a medium black square or a medium yellow square?
medium black square  medium yellow square  both of them none of them