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***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：①②

D：①④