There are three blocks. We call them A, B and C. Block C is to the left of block A and it is below block B. Block A has a medium black square. Block B has a medium black square and a medium blue square. The medium black square is touching the bottom edge of this block. It is below the medium blue square. And block C has one medium black square and 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 below the blue object? a medium black square that is touching the bottom edge of a block or a yellow thing?
medium black square  that is touching the bottom edge of a block  yellow thing both of them none of them