人民代表大会制度是中国人民当家作主的根本政治制度，这一制度       （   ）                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             

①是社会主义民主政治的本质和核心

②是中 * * 党带领全国人民长期奋斗的重要成果

③决定了人民民主专政的国家性质　　

④体现了我国社会主义民主政治的特色

A．①③

B．②④

C．①②③

D．①②④