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