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