Which safety duty falls upon the Unloader under ADR 1.4.3.7?

1. Checking that packagings or tank containers show no damaging leak that could compromise safety during unloading
2. Calculating the 1.1.3.6 point values prior to vehicle departure from the consignor
3. Affixing orange plates to the front of the towing vehicle
4. Issuing the dangerous goods transport document to the driver before departure