There are three blocks, A, B and C. Block A has a medium yellow square. Below block A we have block B which contains two medium blue squares. Below a medium black square and medium blue square number two there is medium blue square number one. Below the medium black square is medium blue square number two. Below block B there is block C which contains one medium yellow square.
Which object is below a medium yellow square? medium blue square number one or medium blue square number two?
medium blue square  number one medium blue square  number two both of them none of them