Please choose the correct solution to the question: To make concrete forms for a shed foundation end at an even height.

Solution1: Place the forms on the ground where the supports will be. Draw a level line on the form of the support that will be lowest and cut all of the forms down to the height of that line.

Solution2: Place the forms on the ground where the supports will be. Draw a line on one of the forms and cut all of the forms down to the height of that line. Use sandpaper even out the height of the forms.

Answer format: solution1/solution2
Answer: solution1