Operator Variations are identified by which pattern?

• A. two digits followed by two alphanumeric characters
• B. two alphanumeric characters followed by a two digit number
• C. a letter followed by three digits
• D. four alphanumeric characters

Answer: (B)

Operator Variations are identified by a format where the first two positions can be letters or digits, followed by two digits. This keeps the base operator code compact while reserving a clear, numeric variation index in the last two positions, allowing up to 100 variations per operator. The two initial alphanumeric characters provide flexibility for both older numeric codes and newer alphabetic ones, while the final two digits give a straightforward, scalable way to designate individual variations. Using this pattern avoids tying the variation index to the operator portion itself and supports consistent parsing and expansion.