What Is an Alternative to "Hard Keyed" Data

What is an alternative to "hard keyed" data?

A) If user requirements are correctly defined, the data will not change and may be "hard keyed."
B) Using variables in the program, such as cell addresses in a spreadsheet.
C) Alternatives to "hard keyed" data is not possible. All data must be "hard keyed."
D) Creating the program in a way that does not require data.

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