Due to the operation of ‘Laws of return to Scale’ LAC curve is / » Fundamentals of Economics solved MCQs / By admin Question: Due to the operation of ‘Laws of return to Scale’ LAC curve is A. Rectangular hyperbola B. U-Shaped C. Parallel to the horizontal axis D. Parallel to the vertical axis Answer» b. U-Shaped Note: The above multiple-choice question is for all general and Competitive Exams in India.