There are three blocks, A, B and C. Block C is to the right of block B and above block A. Block A has one medium blue triangle. A medium yellow triangle is above and to the left of a small black square. The medium blue triangle is far from the small black square. The small black square is touching the right edge of this block. Block B contains a small blue triangle and one medium yellow triangle. To the left of and near to the medium yellow triangle is the small blue triangle. Block C contains one big black triangle and one medium yellow square. The big black triangle is touching the right edge of this block. To the right of the medium yellow square there is a small black square. The medium yellow square is touching the bottom edge of this block. The big black triangle is to the right of the medium yellow square and the small black square.
What is above the medium blue triangle? a small black square or a big object that is touching the right edge of a block?
small black square  big object that is touching the right edge of  a block  both of them none of them