There are three blocks, A, B and C. Block C is above A. Block A is to the left of B. Block A has a small black square and one big black triangle. Below the big black triangle there is the small black square. Block B has a big yellow square. Block C has a small yellow circle, a small yellow square and one small blue square. Below the small blue square is the small yellow square. The small yellow circle is below and near to the small blue square.
What is above the small black square? a big yellow square or a small yellow square?
big yellow square  small yellow square  both of them none of them