His efforts to raise money for his program were ________ because no one showed any intention to take a cent out of their pockets.

A．in place

B．in sight

C．in effect

D．in vain

唐太宗在总结其治国经验时，提出“国以人为本，人以衣食为本”的理念，同时又认为“夫安人宁国，惟在于君，君无为则人乐，君多欲则人苦，朕所以押情损欲，克己自励耳。”唐太宗的治国经验体现了中国古代哪些学派的主张          （   ）

A．儒家、法家

B．墨家、儒家

C．儒家、道家

D．法家、道家