We have three blocks, A, B and C. Block A is above block C and below block B. Block A contains one medium black square. Block B has one medium black square. And block C has two medium yellow squares. Below a medium blue square and medium yellow square number two is medium yellow square number one. The medium blue square is below medium yellow square number two.
Which object is below a medium black square? medium yellow square number one or medium yellow square number two?
medium yellow square  number one medium yellow square  number two both of them none of them