We have three blocks, A, B and C. One small yellow triangle is in block A. Block B is to the right of block A. It contains a small yellow triangle. To the left of block B there is block C which contains one small black square, one small yellow triangle and a medium blue triangle. The small black square is near to and touching the small yellow triangle. The small yellow triangle is to the right of the medium blue triangle.
Which object is to the left of a small yellow triangle? the small black square or the medium blue triangle?
the small black square  the medium blue triangle  both of them none of them