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