Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean aluminum gutters [title] Lean the ladder against the gutters near a nail. [step] Locate a place on the gutters where a nail holds them to the house. It is best to place the ladder here because the gutter is supported best at the nails.

Ending1: There are ways to get the stairs to be straight as well. Find a height of one or two feet to add height. Ending2: If you place the ladder farther from a nail, the gutter is weaker and may crash. [substeps] If you can lean the ladder against the house's main structure rather than the gutters, do this to entirely avoid leaning on the gutters. Ending3: Just test the nail to see what direction it would be best to turn the gutter by squatting on the side where it will not lean heavily. [title] Turn the gutter a few times to remove stubborn bits. Ending4: Your ladder must be standing higher than the floor when mounting the ladder. [substeps] Lean on the top of the ladder against the sides of the house to support the ladder.

Answer format: ending1/ending2/ending3/ending4