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