Please choose the correct solution to the question: How can I know how much paint is in a tightly sealed can?

Solution1: After you finish painting, and before you close the paint can, paint a line across the label to show the paint level, that way you’ll know how much and what color the paint is without opening it.

Solution2: After you finish painting, and before you close the paint can, paint a line across the inside of the can to show the paint level, that way you’ll know how much and what color the paint is without opening it.

Answer format: solution1/solution2
Answer: solution1