How do you write return address for married couple?

a few examples:

The Ambrosino Family

44 Tooks Lane

Smithfield, MA 03928

The Ambrosinos'

44 Tooks Lane

Smithfield, MA 03928

John & Cathy Ambrosino

44 Tooks Lane

Smithfield, MA 03928

Mr. & Mrs. John Ambrosino

44 Tooks Lane

Smithfield, MA 03928