We have three blocks. We call them A, B and C. Block A is to the left of block B and it is above block C. Block A contains one big black circle. Block B has a big blue triangle and one big black triangle. To the left of, below and near to a medium black square which is to the left of and above the big black triangle is the big blue triangle. This block also has a small yellow triangle. Below and near to the small yellow triangle is the big black triangle. Block C has a big yellow square and a big blue square. Above the big blue square there is the big yellow square.
What is above the big black triangle? a big circle or a medium square?
big circle  medium square  both of them none of them