Which statement best describes what happened on 1 January 1901?

Which statement best describes what happened on 1 January 1901?

• AThe colonies were united into a federation of states called the Commonwealth of Australia.Correct
• BThe states separated into independent colonies outside the Commonwealth of Australia.
• CThe Commonwealth of Australia ended and the colonies were restored.
• DThe colonies were united into a single territory with no states.

According to the fact, on 1 January 1901 the colonies were united into a federation of states called the Commonwealth of Australia.