There are three blocks, A, B and C. Block A contains one small yellow circle. Block B is below block A. It has a small blue circle and a medium yellow circle. The small blue circle is above the medium yellow circle. The medium yellow circle is touching the bottom edge of this block. Above block B there is block C with one small yellow circle in it. The small yellow circle is near to and below a medium yellow triangle.
What is above the blue shape? a small yellow circle or a medium yellow triangle?
small yellow circle  medium yellow triangle  both of them none of them