855 Section 06 Q19

19.   Under a provision of the Constitution that was never applied, Congress has been required to call a convention for considering possible amendments to the document when formally asked to do it by the legislatures of two-thirds of the states.

(A) was never applied, Congress has been required to call a convention for considering possible amendments to the document when formally asked to do it

(B) was never applied, there has been a requirement that Congress call a convention for consideration of possible amendments to the document when asked to do it formally

(C) was never applied, whereby Congress is required to call a convention for considering possible amendments to the document when asked to do it formally

(D) has never been applied, whereby Congress is required to call a convention to consider possible amendments to the document when formally asked to do so（E）

(E) has never been applied, Congress is required to call a convention to consider possible amendments to the document when formally asked to do so

provision

请问这句话是什么意思啊？ D选项的不对是因为它改变了原意么。

is the answer E?

whereby多余的，under the provision....已经表示在某种情况下