There are three blocks, A, B and C. One medium black triangle is in block A. Then, there is block B which has a small blue square and a medium yellow square. The small blue square is above the medium yellow square. Finally, we have block C to the right of block B and block A is to the left of it. It contains two medium yellow triangles. To the left of a small blue triangle and medium yellow triangle number two there is medium yellow triangle number one.
Which object is to the left of a medium yellow triangle? the medium yellow square or the black triangle?
the medium yellow square  the black triangle  both of them none of them