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