There are three blocks, A, B and C. Block A has one medium blue square. Block B is below block A. It contains one medium yellow square. Below the medium yellow square is a medium blue square. Below block A there is block C with two medium yellow squares in it. Below medium yellow square number two is medium yellow square number one. This block also contains a medium black square. Below medium yellow square number one and medium yellow square number two there is the medium black square.
Which object is below a medium blue square? medium yellow square number one or the medium yellow square that is in block B?
medium yellow square  number one the medium yellow square  that is in block B both of them none of them