There are three blocks. We call them A, B and C. Block A contains a big black square. Then, there is block B. It contains a medium black square. Finally, below block A we have block C. It is to the left of block B. It has two medium black circles. To the left of a small yellow square and medium black circle number two is medium black circle number one. It also contains one big yellow triangle. A medium yellow triangle is touching the left edge of this block. It is to the left of the small yellow square.
What is to the left of the medium black square? a big yellow triangle or a medium black circle?
big yellow triangle  medium black circle  both of them none of them