The term "the Troubles" refers to a period of violence (from the late 1960s
until 1998) between Catholics and Protestants in Northern Ireland.
Protestants tended to have higher incomes than Catholics, while more
Catholics were dependent on state benefits. Most Protestants wanted to
remain part of the United Kingdom, while most Catholics wanted to be part of
the separate Republic of Ireland. The two groups disagreed about social
issues. Protestants formed the majority, so they controlled the government.
In what way were "the Troubles" a conflict over ideology?

A. Two groups used violence for constitutional goals.
B. Two groups were fighting over different beliefs.
C. The minority group was shut out of political power.
D. Members of the minority group had lower incomes.