单项选择题

Which of the following candidates is eligible for the election of councilors

A.A 20-year-old British who has been living in the area for a year.
B.A 30-year-old Englishman who has moved to the area half a year ago.
C.A 40-year-old British who has been working in the area for 2 years.
D.A 50-year-old Irishman who has been working and living in the area for 3 years.