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