According to Political Scientists Donald Green, Bradley Palmquist, and Eric

According to political scientists Donald Green, Bradley Palmquist, and Eric Schickler, how do group identities shape the decision someone makes when choosing between being a Republican and a Democrat?

A) Group identities often influence socioeconomic status, which affects partisanship.
B) Group identities affect one's self-esteem, which influences partisanship.
C) Group identities influence a person's trust in government, which affects partisanship.
D) A person picks the party that has more members from the groups with whom the person identifies.