Which One of the Following Statements Is True

Which one of the following statements is true?

A) Capital gains have always been taxed under Australia's tax laws
B) Capital gains were taxable before 20 September 1985 only if the taxpayer had held the asset for more than 12 months
C) Capital gains tax was introduced in Australia to apply to assets sold on or after 20 September 1985
D) Capital gains tax was introduced in Australia to apply to assets acquired on or after 20 September 1985