There are three blocks, A, B and C. Block C is above block B and to the right of block A. Block A has one medium black circle. This block also has a small yellow triangle. To the left of the small yellow triangle is the medium black circle. Block B has two small black triangles. This block also has one big black square. There is also one medium black square touching the bottom edge of this block. Above small black triangle number two there is the big black square. It is above small black triangle number one. Near to and to the right of small black triangle number one there is the medium black square. Small black triangle number two is touching the bottom edge of this block. Below the square which is above small black triangle number two there is the medium black square. Small black triangle number one is touching the bottom edge of this block. Block C has two small black squares. Small black square number two is to the right of a small black circle which is above a medium black circle. It is to the right of and above the medium black circle. There is also one big yellow triangle in this block. It is below small black square number two.
Which object is above a small black triangle? the big black square or the medium black square?
the big black square  the medium black square  both of them none of them