We have three blocks, A, B and C. Block A is below blocks B and C. Block A contains one medium blue square. A medium yellow square is below the medium blue square and a medium black square. Below the medium blue square is the medium black square. Block B has one medium blue square. And block C contains one medium blue square.
Which object is below a medium blue square? the medium blue square that is in block B or the medium blue square which is in block A?
the medium blue square  that is in block B the medium blue square  which is in block A both of them none of them