请问这里填哪一个词比较好？

The atmosphere of public happiness for the victory was weakened by widespread sorrow for the death of Nelson. As one poet later wrote:" The victory of Trafalgar was celebrated, indeed, with the usual forms of rejoicing(欢庆), ____they were without joy."

A. and B. so C. for D. but

前后意思相反，用D。

我认为选D 应该是转折吧

D

D.but 因为indeed 后面一句是插入语，前文说在庆祝胜利，后文说他们不快乐，很明显用but连接合适