Which statement about PLCs and DCS architectures accurately reflects their typical use cases?

Which statement about PLCs and DCS architectures accurately reflects their typical use cases?

• A. PLCs are modular, fast, suitable for discrete and simple analog control; DCS provides distributed processing, redundancy, and advanced process control for large continuous processes.
• B. PLCs are modular but unsuitable for discrete control.
• C. DCS cannot provide redundancy.
• D. PLCs and DCS are identical.

Answer: (A)