The Supreme Court Upheld Ohio's Voter ______

The Supreme Court upheld Ohio's voter ______ .

A) purging system, which drops voters after eight years of an individual's electoral inactivity
B) registration system, which automatically registers voters when they change their address
C) purging system, which drops voters after four years of an individual's electoral inactivity
D) registration system, which automatically registers voters when they receive an Ohio driver's license