must review each exemption granted by regulations made under section 12(1)(a) at intervals not greater than 3 years:
may review any such exemption at any time.
The Registrar must report to the Minister on the outcome of any review under this section.
After considering the report provided by the Registrar, the Minister may recommend to the Governor-General that the exemption in question be removed or amended.
The Governor-General may, by Order in Council made on the recommendation of the Minister under subsection (3), make regulations revoking or amending any exemption granted by regulations made under section 12(1)(a).