On Which ONE of the Following Occasions May the Courts

On which ONE of the following occasions may the courts refer to Hansard as an extrinsic aid to interpretation?

A) Always. The words in debate are equally as valid as those in the Act itself.
B) When the legislation is ambiguous or obscure, but there are clear comments from Members of Parliament (MPs) in Hansard.
C) When the wording of the legislation leads to absurdity, but Hansard contains clear comments from the Minister promoting the Bill.
D) Never. The courts may only use the actual words of the Act as enacted by Parliament.