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