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 above the triangle? a big black square or a small blue circle?
big black square  small blue circle  both of them none of them