The correct answer is: [B]: " AZ " .
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Note: All "postal abbreviations" for "states" in the U.S.A. {"United States of America"] are denoted as "two-letter, capitalized digits" .
As such, among the answer choices given, Choice: [B]: " AZ " ; is the only answer choice that would fit the criteria.
Furthermore, " AZ " is the designated "postal abbreviation" for the state of Arizona.
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Hope this helps!
Best wishes to you!
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