Which organisation has recently established official ties with UNESCO for promoting peace and non-violence?

Which organisation has recently established official ties with UNESCO for promoting peace and non-violence?
[A]Ramakrishna Mission
[B]All Bengal Principals’ Council
[C]West Bengal Women’s Union
[D]International Vedanta Society

Ramakrishna Mission
The United Nations Educational Scientific and Cultural Organisation (UNESCO) has established an ‘official relationship’ with the Ramakrishna Mission in the areas of inter-cultural dialogue, social cohesion and for promoting peace and non-violence.