We have three blocks. We call them A, B and C. Block A has one big black triangle. Then, there is block B. It contains one small yellow triangle. Finally, to the left of block A we have block C which is below block B. It has a big black square, a medium blue circle and one small black triangle. Far from and to the left of the medium blue circle there is the big black square. A small black square is to the right of the small black triangle. A medium yellow circle is also in this block. The big black square is touching the bottom edge of this block. The medium blue circle is touching the right edge of this block. The medium yellow circle is to the left of the square which is to the right of the small black triangle. It is below the medium blue circle.
Which object is to the left of a big black triangle? the medium blue circle which is touching the right edge of a block or the small black triangle?
the medium blue circle  which is touching the right edge of  a block  the small black triangle  both of them none of them