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