The first period of the party system refers to the appearance of

The first period of the party system refers to the appearance of ______.
A、the Federalists
B、the Anti-Federalists
C、the Federalists and the Anti-Federalists
D、the Democratic-Republicans and the Anti-Federalists
【正确答案】：C
【题目解析】：第一个时期党的制度指的是联邦主义者和反联邦主义者的出现。