Which statement correctly compares isoquant lines and indifference curves?

• A. Both represent combinations that yield the same level of satisfaction or output.
• B. Isoquant lines represent consumer preferences, while indifference curves represent production levels.
• C. Indifference curves are used in production analysis, while isoquant lines are used in consumer theory.
• D. Both are used to analyze cost efficiency in production.

Answer: (A)