【单选题】

Revisions are to be made consistent with the format of the specification using the provisions of FAR 21.50 as a basis.

A、By using the basic provisions of FAR 21.50, revisions become consistent with the format of the specification.
B、FAR 21.50 provisions are the basic to the revisions which are consistent with the format of the specification.
C、To make revisions consistent with the format of the specification, the provisions of FAR 21.50 should be adopted as a basis.