There are three blocks, A, B and C. Block B is to the left of block C and below block A. Block A has one medium yellow square. A medium black square is touching the bottom edge of this block. It is below the medium yellow square. Block B has a medium black square and one medium blue square. The medium black square is below the medium blue square. And block C has a medium blue square.
Which object is below a medium square? the medium blue square which is in block B or the medium blue square that is in block C?
the medium blue square  which is in block B the medium blue square  that is in block C both of them none of them