Question: UNIX: Which statement is NOT true regarding regular expression quantifiers? They act on the preceding pattern element They can operate on groups and character classes

UNIX:

Which statement is NOT true regarding regular expression quantifiers?

They act on the preceding pattern element
They can operate on groups and character classes
In order to use a plus sign "+" quantifier as a literal character, you must first 'escape' it using a backslash '\' character
The question mark quantifier "?" will match the preceding element exactly one time

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