There are two blocks. We call them A and B. Block A is to the left of B. Block A contains one medium blue square and a medium black square. Below the medium black square and the medium blue square there is a medium yellow square. Below the medium black square there is the medium blue square. Block B contains one medium blue square and one medium yellow square. The medium blue square is touching the bottom edge of this block. It is below the medium yellow square.
What is to the left of the object that is touching the bottom edge of a block? a medium yellow square or a medium black square?
medium yellow square  medium black square  both of them none of them