Burglary Series (02): Most Valuable Item

You call your spouse to inform his/her most precious item is gone! Given a dictionary of stolen items, return the most expensive item on the items.

Examples

most_expensive_item({
  "piano": 2000,
}) ➞ "piano"

most_expensive_item({
  "tv": 30,
  "skate": 20,
}) ➞ "tv"

most_expensive_item({
  "tv": 30,
  "skate": 20,
  "stereo": 50,
}) ➞ "stereo"

Notes

• There will only be one most valuable item (no ties).
• The dictionary will always contain at least one item (no empty dictionary).