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