The International Day for the Elimination of Racial Discrimination is held each year on March 21. What does this date commemorate?

	a.	the anniversary of the Canadian's government's official apology to Japanese Canadians for their internment during World War II and confiscation of their property
	b.	the anniversary of the 1960 Sharpeville massacre in South Africa
	c.	a new start coinciding with the first day of spring
	d.	the anniversary of the 1989 massacre in Tiananmen Square in Beijing, China