There are two blocks, A and B. Block A is above B. Block A contains three medium yellow squares. Medium yellow square number one is below medium yellow square number two and medium yellow square number three. Medium yellow square number two is below a medium black square and medium yellow square number three. Below the medium black square there is medium yellow square number three. Block B has a medium black square.
Which object is above a medium black square? medium yellow square number three or medium yellow square number one?
medium yellow square  number three medium yellow square  number one both of them none of them