Please choose the correct solution to the question: To roll out the dough,

Solution1: sprinkle some salt lightly on a countertop, place the dough on the floured surface, and use the rolling pin to flatten out the dough to 1" thick.

Solution2: sprinkle some flour lightly on a countertop, place the dough on the floured surface, and use the rolling pin to flatten out the dough to 1" thick.

Answer format: solution1/solution2
Answer: solution2