There are three blocks, A, B and C. Block A has two medium yellow squares. Medium yellow square number one is touching the bottom edge of this block. Medium yellow square number two is below a medium blue square. Below medium yellow square number two is medium yellow square number one. It is below the medium blue square. Then, there is block B which contains one medium yellow square. Finally, we have block C to the left of block B and block A is above it. It contains one medium blue square and one medium black square. Below the medium black square is the medium blue square.
What is below the shape that is touching the bottom edge of a block? a medium yellow square or a black thing?
medium yellow square  black thing both of them none of them