Which of the following music groups are NOT considered a "trio"?

A trio is defined as a set or group consisting of three people or things.

Unlike the other three bands listed here, Savage Garden were an Australian pop duo. The band's lineup consists of lead vocalist Darren Hayes and Daniel Jones on instruments.

Formed in Brisbane, Queensland, in 1993, the duo achieved international success between the mid 1990s and early 2000s with the No. 1 hit singles "I Want You", "To the Moon and Back", "Truly Madly Deeply", "The Animal Song" and "I Knew I Loved You".

The band's two studio albums, Savage Garden and Affirmation, reached No. 1 in Australia and peaked in the top ten in both the United Kingdom and United States; selling 23 million copies worldwide. Additionally, the group won a record number of ten ARIA Music Awards in 1997 for their debut album and its related singles. The duo disbanded by the end of 2001, with Hayes continuing as a solo artist.