Return the Most Expensive Piece of Jewellery

You go to a jewelry shop and try to find the most expensive piece of jewelry. You write down the name of each piece of jewelry and its price.

Create a function that gets the name of the piece of jewelry with the highest price and returns "The most expensive one is the {name of jewelry piece}".

Examples

mostExpensive ({
  "Diamond Earrings": 980,
  "Gold Watch": 250,
  "Pearl Necklace": 4650
}) ➞  "The most expensive one is the Pearl Necklace"

mostExpensive({
  "Silver Bracelet": 280,
  "Gemstone Earrings": 180,
  "Diamond Ring": 3500
}) ➞ "The most expensive one is the Diamond Ring"

Notes

• There will always be at least one item in the object.
• There will always be only one highest priced item (i.e. there will not be two items with the joint highest value).