[求助]一道 level 1 GIPS study session question

3. Which of the following statements most accurately describes verification under the GIPS standards?

A. may be performed on single composite.
B. is required for a firm to claim GIPS compliance.
C. requires a verification report to be issued for the entire firm.
D. is required for all composites in existence prior to January 1, 2000.

answer : A.

不过GIPS 2006明明说了 "verification cannot be carried out for a single COMPOSITE" (pg 21)

何解？