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