The Content of the Principle of Respect for Human Rights

the content of the principle of respect for human rights in international law maybe expressed in which of the following propositions as expounded by G. Tunkin inthe ory of International Law?

A) all states have a duty to respect the fundamental rights and freedoms of all persons within the ir territories.
B) stateshave a duty not to permit discrimination by reason of sex, race, religion orlanguage.
C) states have a duty to promote universal respect for human rightsand to co-operate with each othe r to achieve this objective.
D) all of the above.