【单选题】“ ……to stay true to our Party’s founding mission and stand firm in your ideals and convictions. Acting on the purpose of the Party, you should always maintain close ties with the people.” Which of the following statements is true?
A. Our Party’s founding mission is that we will realize the lofty ideal of communism and the common ideal of socialism with Chinese characteristics.
B. The ideals and convictions are to seek happiness for the Chinese people and rejuvenation for the Chinese nation.
C. The purpose of the Party is to serve the people wholeheartedly
D. All of the above.