There are three blocks, A, B and C. Block A is above B. Block B is to the left of C. Block A has one big blue triangle. Block B contains one medium black triangle and a medium yellow circle. Near to the medium yellow circle is the medium black triangle. And block C contains a small yellow triangle and a big yellow circle. The small yellow triangle is touching the bottom edge of this block. It is to the left of the big yellow circle.
Which object is above a black object? the big blue shape or the medium yellow circle?
the big blue shape the medium yellow circle  both of them none of them