There are three blocks, A, B and C. Block B is above C. Block C is above A. Block A has a medium blue triangle, one small blue square and one big black circle. A small blue triangle is above the big black circle and the medium blue triangle. The medium blue triangle is to the right of, near to and above the big black circle. The big black circle is touching the bottom edge of this block. Block B contains one big yellow circle. It also contains a big blue square. Above the big yellow circle is the big blue square. The big yellow circle is touching the bottom edge of this block. Block C has one big black square.
Which object is below a small blue triangle? the big black circle or the big black square?
the big black circle  the big black square  both of them none of them