According to Duverger's Law,a Country with Single-Member Plurality Districts Tends

According to Duverger's Law,a country with single-member plurality districts tends to have a two-party system because

A) third parties tend to be banned by statute.
B) having more than two parties is too confusing for voters.
C) voters prefer to think in pairs like ins/outs or incumbents/challengers.
D) third and fourth parties tend to receive no representation for the votes they receive.