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