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