There are three blocks. We call them A, B and C. Block B is below A. Block A is to the left of C. Block A has a medium black triangle, one medium yellow square and a small black triangle. Above the medium yellow square , the small black triangle and a medium black square is the medium black triangle. The medium yellow square is to the right of the medium black square. Block B contains a small yellow triangle and a big blue triangle. A medium yellow square is below a small blue circle. It is near to, to the left of and below the big blue triangle. To the left of the big blue triangle and the small blue circle there is the small yellow triangle. Block C has two big yellow squares. This block also contains a small yellow circle and one small black triangle. This block also has a medium blue square. It is touching the right edge of this block. To the left of, below and touching big yellow square number one there is the small yellow circle. Big yellow square number one is below and near to the medium blue square.. To the right of the small black triangle there is big yellow square number two.
Which object is below a small black triangle? the big blue triangle or the medium blue square that is touching the right edge of a block?
the big blue triangle  the medium blue square  that is touching the right edge of  a block  both of them none of them