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