There are three blocks. We call them A, B and C. Block B is below C. Block C is to the right of A. Block A has one medium blue square and a medium black square. The medium blue square is touching the bottom edge of this block. A medium yellow square is below the medium black square.. Below the medium yellow square and the medium black square is the medium blue square. Block B contains a medium blue square. And block C contains one medium black square. A medium yellow square is also in this block. Below the medium yellow square there is the medium black square.
What is above the shape that is touching the bottom edge of a block? 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