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