There are two blocks, A and B. Block A is to the right of B. Block A has a medium blue circle and one medium yellow circle. To the left of the medium yellow circle is the medium blue circle. Block B contains one small black triangle, one medium blue square and a big blue triangle. There is also a medium black square touching the right edge of this block. The small black triangle is near to the medium blue square. The big blue triangle is below a big black triangle which is above and to the left of the medium black square. The medium blue square is touching the bottom edge of this block. This shape is below the medium black square.
What is to the left of the yellow object? a big blue triangle or a big black triangle?
big blue triangle  big black triangle  both of them none of them