PLease help lol i need this Which of the following options is not an example of gerrymandering?

A) When one party or the other finds ways to register more new voters than the other party does.

B) When a district in South Carolina is drawn in such a way that the incumbent Republican candidate has the higherst percentage of registered republican voters.

C) When a District in California is manipulated so there are more registered democrats than there would be otherwise.

D) When elected representatives from a given state, in one party, work together to draw district lines to make sure they have the maximum number of elected representatives in their particular party.