When Analyzing the List of Nouns to Determine Whether to Exclude

Multiple Choice

When analyzing the list of nouns to determine whether to exclude a particular noun as an important "thing," which of the following questions should be asked about the noun? (choose two)

A) Is it in the domain?"
B) Is it a synonym of an existing thing?"
C) Is it a tangible item?"
D) Is it identifiable?"
E) Is it a persistent item?"
F) Is it an output from the system?