Despite Having Long-Standing Roots in the United States, Latinos Have

Despite having long-standing roots in the United States, Latinos have only recently become a political force. This is because:

A) they are a politically diverse group of voters.
B) there are not enough Latino voters to compel politicians to pay attention to this group.
C) conflict between African-American and Latino politicians has led to internal rifts.
D) neither party tries to mobilize Latino voters.
E) Latinos have only recently received the vote.