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