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