We have 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 yellow square. Block B contains a medium yellow square, one medium yellow triangle and a medium black square. The medium yellow square is touching the bottom edge of this block. The medium yellow triangle is above, to the left of and near to the medium black square. Block C has a medium black circle and a big blue triangle. The medium black circle is touching the right edge of this block. This object is below the big blue triangle.
Which object is above a medium yellow square? the medium black square or the big blue thing?
the medium black square  the big blue thing both of them none of them