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