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