There are three blocks, A, B and C. A big yellow triangle and one small yellow triangle are in block A. There is also a small yellow square in this block. This object is above the small yellow triangle. The big yellow triangle is to the left of the small yellow square and the small yellow triangle. Then, we have block B with one medium yellow triangle and one small black triangle in it. Above the small black triangle is the medium yellow triangle. Above block A and to the left of block B there is block C. It has one small black circle and a medium yellow square. The small black circle is above the medium yellow square.
Which object is to the left of a small yellow square? the medium yellow square or the small black circle?
the medium yellow square  the small black circle  both of them none of them