There are three blocks, A, B and C. There is one medium black square in block A. Then, we have block B which has one medium black square and a medium yellow square. A medium blue square is below the medium black square and the medium yellow square. The medium black square is below the medium yellow square. Block C is above block B and to the left of block A. It has a medium blue square.
Which object is below a medium blue square? the medium black square which is in block A or the medium black square which is in block B?
the medium black square  which is in block A the medium black square  which is in block B both of them none of them