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