To What Extent Can the 'Long Title' of an Act

Multiple Choice

To what extent can the 'long title' of an Act be used as an aid to the Act's construction?

A) It cannot be used as an aid to construction at all, as was established in the case of R v Galvin.
B) It may be used generally as a secondary aid to construction, but only if the construction does not contradict the specific wording of the relevant section.
C) It may be used as a minor aid to resolve technical ambiguities arising from the operative sections of the Act in all cases where there is a discrepancy between the relevant section and a schedule in the Act's explanatory notes.
D) It may only be used when applying the rule in Heydon's case or, in modern times, where the rule in Pepper v Hart is applied strictly.