Final answer:
Upon review of the working papers and the engagement's procedures, none of the informational criteria - sufficiency, reliability, or relevance - appear to be violated. The auditors collected adequate data (sufficiency), from reliable practices (reliability), and the information was pertinent to the inventory engagement (relevance).
Step-by-step explanation:
Given the scenario described in the fact pattern, the internal auditors are reviewing inventory counts and have extended their testing beyond the usual finished goods inventory to include raw materials and work-in-progress. The informational criteria we are examining are sufficiency, reliability, and relevance in relation to the engagement working papers presented.
Sufficiency relates to the quantity of information. In this case, the internal auditors have performed their standard tests and extended them further, which suggests that the quantity of information gathered is adequate, thus sufficiency is not violated.
Reliability pertains to the quality, source, and consistency of the information. Since the information was gathered through standard, consistent practices without discrepancies being noted, we have no reason to believe reliability is violated based on the information provided.
Relevance is about the information being pertinent to the engagement and its objectives. The engagement was focused on the inventory, and the tests were related to this objective, suggesting that relevance was maintained.
From the options given, All criteria that are violated would be incorrect as there is no clear evidence provided that suggests any of the criteria - sufficiency, reliability, or relevance - were violated based on the internal auditors' tests and conclusions drawn from the working papers.