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