There are three blocks, A, B and C. There is a medium yellow circle in block A. To the left of block A we have block B which contains a medium yellow circle. To the right of block A there is block C which has a big blue circle, one medium black triangle and one medium blue triangle. There is also a big blue triangle touching the bottom edge of this block. Above the big blue triangle and the medium blue triangle is the medium black triangle. To the right of the big blue triangle is the medium blue triangle. The medium blue triangle is touching the right edge of this block. The big blue circle is touching the right edge of this block. This shape is above the medium blue triangle.
What is to the left of the medium blue triangle? a medium yellow circle or a medium black triangle?
medium yellow circle  medium black triangle  both of them none of them