In the area of human rights, what separates Singapore from many other Asian countries?

In the area of human rights, what separates Singapore from many other Asian countries?

A. It is not a member of the Association of Southeast Asian Nations (ASEAN).

B. It has not signed the International Covenant on Civil and Political Rights.

C. It has not adopted the ASEAN Human Rights Declaration.

D. It is not a member of the United Nations.

Reference: https://www.fidh.org/en/region/asia/singapore/government-s-response-to-un-review-a-major-setback-for-human-rights