There are three blocks, A, B and C. There is a medium blue square in block A. Block B is above block A. It has a medium black square. Below a medium blue square there is the medium black square. Above block B there is block C. It contains one medium yellow square and one medium blue square. The medium yellow square is below the medium blue square.
Which object is below a medium blue square? the medium blue square which is in block A or the medium blue square that is in block C?
the medium blue square  which is in block A the medium blue square  that is in block C both of them none of them