First Principles Thinking: the SPH lists all three items within the same enumerated set of practices permitting non-GIPS firms to satisfy Standard III(D)
C is correct. The SPH states verbatim that non-GIPS firms may meet Standard III(D) obligations by "considering the knowledge and sophistication of the audience to whom a performance presentation is addressed when determining what information to provide and tailoring it accordingly" (Item I); "presenting the performance of a composite of similar portfolios rather than using a single representative account" (Item II); and "including disclosures that fully explain the performance results being reported (for example, stating, when appropriate, that results are simulated when model results are used; clearly indicating when the performance record is that of a prior entity; or disclosing whether the performance is gross of fees, net of fees, or after tax)" (Item III). All three items are explicitly enumerated. All three satisfy the criterion.
Option A is incorrect because all three practices appear in the same enumerated list in the SPH. Selecting only one misrepresents the scope of the SPH's guidance, which presents all three as co-equal methods of satisfying the standard.
Option B is incorrect because Items I, II, and III are each individually named in the SPH's enumeration. Excluding any one of them cannot be reconciled with the SPH's text.