There are three blocks, A, B and C. Block A has a medium black circle, one medium yellow triangle and one small black square. This block also contains a big yellow square. The medium black circle is to the left of and below the small black square. The medium yellow triangle is touching the bottom edge of this block. It is below the small black square and the big yellow square. Block B is to the left of block A. It has a medium blue square. There is also a big black triangle touching the bottom edge of this block. The big black triangle is to the left of the medium blue square. Below block A there is block C. It has a medium blue square, one small black triangle and a medium black square. Near to the small black triangle is a big yellow triangle. This block also has a big blue triangle. Near to and to the left of a big yellow circle there is the small black triangle. The big blue triangle is touching the right edge of this block.. Above and to the right of the small black triangle is a small black square..
What is above the big yellow triangle? a medium yellow triangle or a small black square?
medium yellow triangle  small black square  both of them none of them