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