There are three blocks, A, B and C. Block A contains a medium blue triangle. This block also has a small black triangle. The medium blue triangle is below and near to the small black triangle. Block B is below block A. It contains a medium blue square and a small blue square. The medium blue square is touching the right edge of this block. It is above the small blue square. To the left of block B there is block C with one medium blue circle and a big black triangle in it. The medium blue circle is touching the bottom edge of this block. It is below and to the left of the big black triangle.
Which object is above a medium blue square? the small black triangle or the big thing?
the small black triangle  the big thing both of them none of them