We have three blocks, A, B and C. There is a medium yellow square in block A. To the left of block A we have block B. It has one big blue circle. This block also has a medium black circle. The big blue circle is below and to the left of the medium black circle. Finally, we have block C. It is to the left of block B. It has a medium yellow square. One big black square is also in this block. The big black square is below and to the left of the medium yellow square.
Which object is to the left of a medium yellow square? the medium black circle or the big black square?
the medium black circle  the big black square  both of them none of them