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