The Abortion Issue Is an Example of an Issue That

The abortion issue is an example of an issue that:

A) used to divide Republican voters from Democratic voters, but doesn't any longer
B) wasn't a partisan issue till the 1980s, but the Republican platform differs from the Democratic platform on the issue now
C) is so divisive that it isn't listed in either party's platform now
D) was decided by the Supreme Court, so neither party can take a stand on it