There are three blocks, A, B and C. Block A has a small yellow circle. To the right of block A is block B with a big blue circle, a small blue circle and one medium yellow square in it. The big blue circle is below the medium yellow square and the small blue circle. The medium yellow square is touching the right edge of this block. To the left of block A there is block C. It contains two medium black triangles. Medium black triangle number one is to the left of medium black triangle number two. Below and to the left of medium black triangle number two is a big black square. It is below medium black triangle number one.
Which object is to the right of a medium black triangle? the big black square or the medium yellow square that is touching the right edge of a block?
the big black square  the medium yellow square  that is touching the right edge of  a block  both of them none of them