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