be terrified of doing sth 和be terrified to do sth 有什么区别?

be terrified of doing sth 和be terrified to do sth 有什么区别?
She's terrified ______ speeches.
A.make B.to make C.of making D.about making
该选B还是C?
be afraid of doing sth和 be afraid to do sth，be terrified of doing sth 和be terrified to do sth 具体区别是什么？

我暂时保留我的看法！