We have three blocks, A, B and C. Block B is above blocks C and A. Block A contains one medium yellow square. Block B has one medium blue square. Block C contains one medium yellow square, one medium black square and one medium blue square. The medium yellow square is touching the bottom edge of this block. Below the medium blue square there is the medium black square. Below the medium black square and the medium blue square is the medium yellow square.
Which object is below a medium blue square? the medium black square or the medium yellow square that is touching the bottom edge of a block?
the medium black square  the medium yellow square  that is touching the bottom edge of a block  both of them none of them