Please choose the correct ending to complete the given sentence: Health: [header] How to fix thick toenails [title] Soak your feet for 10 minutes in warm water then dry thoroughly. [step] Before you attempt to cut your thick toenails, you should soften them by soaking them in warm water for at least 10 minutes. When you're finished, dry your feet completely, including between your toes.

Ending1: [title] Soften your toenails with a flat stone. [step] Most people find wearing thick-soled socks preferable, as thick-soled socks are easier to remove when old and rough. Ending2: [title] Use a nail file to get rid of healthy patches of calluses. [step] A clear nail file may be the perfect option for removing calluses from your feet. Ending3: [substeps] You can also leave the toenails in the boot for an additional 30 minutes to soak up as much moisture as possible. [title] Cut the tips off your toenails. Ending4: [title] Trim your toenails using nail nippers. [step] Nail clippers are what we typically associate with trimming nails, but these are usually not strong enough to cut through thick toenails.

Answer format: ending1/ending2/ending3/ending4