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