There are three blocks. We call them A, B and C. Block A is to the right of blocks C and B. Block A contains a medium yellow square. Block B contains a medium blue square. A medium yellow square is below a medium black square and the medium blue square. Below the medium blue square there is the medium black square. And block C has two medium blue squares. Medium blue square number one is below medium blue square number two.
Which object is to the left of 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