Northern Ireland, which takes up the northern fifth of Ireland,

Northern Ireland, which takes up the northern fifth of Ireland, is a fourth political division of ____.
A、the United Kingdom
B、Ireland
C、Scotland
D、Wales
【正确答案】：A
【题目解析】：北爱尔兰,占用爱尔兰北部第五,是英国的第四个政治部分。