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