Which regulations state Principle of Unnecessary Sufferings? (multiple choice) ( )
A.
Preamble of the Convention on Conventional Weapons
B.
Article 6(2) of Protocol Ⅱ to the Convention on Conventional Weapons
C.
Article 3(3) of Amended Protocol Ⅱ to the Convention on Conventional Weapons
D.
Article 5 of Protocol I to the Convention on Conventional Weapons