We have two blocks. We call them A and B. A small blue square and a medium black circle are in block A. A small yellow circle is touching the right edge of this block. It is to the right of the small blue square and the medium black circle. To the left of block A there is block B with one small blue triangle and one medium blue square in it. The medium blue square is touching the right edge of this block. The small blue triangle is above the medium blue square.
What is to the left of the black thing? a medium blue square or a small yellow circle that is touching the right edge of a block?
medium blue square  small yellow circle  that is touching the right edge of  a block  both of them none of them