There are three blocks. Lets call them A, B and C. There are one small black square and a big black triangle in block A. The small black square is above the big black triangle. To the left of block A there is block B. It has one medium black triangle. Finally, there is block C which is to the left of block A. It contains one medium blue circle and one big blue square. The medium blue circle is touching the bottom edge of this block. There is also one small yellow triangle in this block. The medium blue circle is to the left of the big blue square and the small yellow triangle.
What is to the left of the small black square? a medium black triangle or a big blue square?
medium black triangle  big blue square  both of them none of them