What Does the Term Redlining Refer To

What does the term redlining refer to?

A) the practice of banks refusing to make loans to people living in certain neighborhoods
B) the practice of drawing electoral districts that are biased against minority groups
C) denying someone the right to vote by drawing a red line across a citizen's name in the voter registry
D) the practice of denying someone rights by labeling him or her a communist
E) the practice of drawing school district boundaries in a way that ensures segregated schools