We have three blocks, A, B and C. Block B is to the left of C and block A is above B. Block A contains one big black square. Block B has a medium yellow triangle. Block C has one small yellow square and a big blue circle. It also has one big black triangle. This object is to the left of and above a medium blue square. The small yellow square is above and to the right of the big blue circle. It is to the right of the big black triangle.
What is above the medium yellow triangle? a big black square or a big black triangle?
big black square  big black triangle  both of them none of them