When was the First International Human Solidarity Day observed by United Nations?

A. December 2004
B. December 2005
C. December 2006
D. None of these

The General Assembly, on 22 December 2005, by resolution 60/209 identified solidarity as one of the fundamental and universal values that should underlie relations between peoples in the twenty-first century, and in that regard decided to proclaim 20 December of each year International Human Solidarity Day.