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