Q. Lehman’s Third Law (Lehman and Belady 1985) is

• (A) Continuing change: A program used in real-world environment must change necessarily or become progressively less useful in that environment.
• (B) Increase complexity: As an evolving program change, its strictures tend to become more complex. Extra resources must be devoted to preserving and simplifying the structure.
• (C) Large program evolution: Program evolution is a self-regulating process.
• (D) None of these