Which statement correctly describes pass-by-reference parameter passing?

Which statement correctly describes pass-by-reference parameter passing?

• A. Pass-by-value copies the value into the function.
• B. Pass-by-reference passes a reference (pointer) to the original data, allowing modification.
• C. Pass-by-reference creates a copy of the data and prevents modification of the original.
• D. Pass-by-reference duplicates all data and passes it to the function.

Answer: (B)