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