Because ____________,The Supreme Court Has Struck Down Most of the Congressionally-Mandated​

Because ____________,the Supreme Court has struck down most of the Congressionally-mandated​ limits on campaign contributions.

A) contributions often favored one party over another
B) ​it has not yet decided how political spending should be regulated
C) ​it has ruled that Congress was acting in a self-serving manner
D) spending money on political campaigns is a form of speech
E) European democracies have fairer elections without including limits on campaign spending