Which statement best describes the voting requirement for Australian referenda on constitutional change?

Which statement best describes the voting requirement for Australian referenda on constitutional change?

• AReferenda on constitutional change require compulsory voting.Correct
• BReferenda on constitutional change use optional voting to encourage debate.
• CReferenda on constitutional change require voting only from members of parliament.
• DReferenda on constitutional change do not involve voters.

According to the fact, voting is compulsory in referenda on constitutional change. The other options contradict this requirement.