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