Proportional Representation Can Be Defined as A(n)

Proportional representation can be defined as a(n) :

A) electoral system in which the candidate with the majority of the vote in a district wins the seat.
B) electoral system in which the candidate with the plurality of the vote in a district wins the seat.
C) electoral system in which the percentage of votes a party receives in a district will determine how many seats that party will win.
D) two-round system for referenda and initiatives.
E) two-round system for electing presidents and prime ministers.