We have three blocks, A, B and C. Block A has a medium black triangle. Block B is above block A. It has one big blue circle. A small yellow square is below the big blue circle. Above block B there is block C with one medium blue square and a medium black triangle in it. This block also has a small yellow triangle. Near to the medium black triangle there is the small yellow triangle. It is touching and below the medium blue square.
Which object is above a medium black triangle? the big blue circle or the small yellow square?
the big blue circle  the small yellow square  both of them none of them