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