We have three blocks, A, B and C. Block A has a medium blue triangle and a medium black square. Near to the medium black square there is the medium blue triangle. Block B is to the left of block A. It has one medium black square. Below block B there is block C which contains one big blue triangle and a big black square. The big blue triangle is touching the right edge of this block. This object is below, near to and to the right of the big black square.
Which object is below a medium black square? the big black square or the medium blue triangle?
the big black square  the medium blue triangle  both of them none of them