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