Regarding the socialist system with Chinese characteristics, which of the following statements are/is correct? （ ）
选项：

A:It combines national and local democratic systems, the Party’s leadership, the position of the people as masters of the country, and law-based governance
B:It conforms to the national conditions in China
C:It showcases the special traits and strengths of socialism with Chinese characteristics
D:provides a fundamental systemic guarantee for China’s development