Which following is correct in terms of an aged society?
A. a group of 65-year-old and above account for 7 percent of the population B. a group of 65-year-old and above account for 14 percent of the population C. a group of 65-year-old and above account for 20 percent of the population D. a group of 65-year-old and above account for 27 percent of the population