We have three blocks, A, B and C. A big blue triangle is in block A. Then, we have block B with one small yellow circle and one small yellow triangle in it. Above and to the right of the small yellow triangle there is the small yellow circle. Finally, we have block C. It is to the right of block B. Block A is to the right of it. It contains a small black triangle, a medium blue triangle and a medium yellow square. One medium black circle is also in this block. To the right of the medium yellow square there is the small black triangle. Below a small black square is the medium blue triangle. The small black square is touching the right edge of this block. To the left of the medium black circle is the medium blue triangle.. The small black triangle is below the small black square and the medium black circle.
Which object is to the left of a blue triangle? the medium black circle or the medium blue triangle?
the medium black circle  the medium blue triangle  both of them none of them