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