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