We have three blocks, A, B and C. Block C is above block A and below block B. Block A has one big yellow square, one small blue square and one small blue triangle. This block also has a big black square. Near to the big black square there is the big yellow square. Below and near to the big black square there is the small blue square. To the right of and below the small blue square is the big yellow square. Block B has a medium black triangle, one big black triangle and one small yellow square. One medium blue square is also in this block. To the right of and above the big black triangle which is below the small yellow square there is a big yellow circle. To the right of the medium blue square is the medium black triangle. The big yellow circle is below the medium blue square.. Block C has a big blue triangle, one medium blue triangle and a medium black triangle. A medium yellow square is also in this block. To the right of and above the medium yellow square is the big blue triangle. To the right of the medium yellow square and the medium black triangle is the medium blue triangle.
What is above the big black square? a big yellow square or a medium yellow square?
big yellow square  medium yellow square  both of them none of them