We have three blocks. We call them A, B and C. Blocks B and A are to the left of C. Block A has one medium black triangle. Block B contains a medium yellow square and one small blue square. It also has one medium yellow circle. It also contains one medium black circle and a big blue square. The medium yellow square is near to the medium black circle. Near to the medium yellow circle is the big blue square. The small blue square is touching the bottom edge of this block. Above the small blue square and the medium yellow circle is the medium yellow square. And block C has one big black triangle.
Which object is to the left of a big black triangle? the medium black triangle or the big blue square?
the medium black triangle  the big blue square  both of them none of them