We have three blocks. We call them A, B and C. There is a small blue triangle in block A. Then, there is block B with a small black triangle in it. Block C is above blocks A and B. It contains two medium black squares. A medium yellow square is also in this block. The medium yellow square is to the left of medium black square number one and medium black square number two.
What is above the small black triangle? a medium black square or a small blue triangle?
medium black square  small blue triangle  both of them none of them