Definitions: A 'writing' consists of letters, words, numbers, or their equivalent set down in any form.

• A. Rule 1001
• B. Rule 1002
• C. Rule 902
• D. Rule 1003

Answer: (A)

The main concept tested is how "writing" is defined within the evidentiary rules. The definition states that a writing consists of letters, words, numbers, or their equivalent set down in any form. This broad wording covers traditional handwritten or printed documents as well as electronic data and other forms where information is captured in writing. Knowing this matters because it determines what counts as a writing for purposes like proving content, authenticating documents, and distinguishing the original from other forms of evidence. The other provisions deal with the original writing, duplicates, or self-authenticating documents, but they don’t define what counts as a writing itself. So, this statement aligns with the defined meaning of "writing" in the rule.