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