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