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