What is the main factor that differentiates the short-run cost function from the long-run cost function? CPA Module 42 What is the main factor that differentiates the short-run cost function from the long-run cost function? a. Nothing, the two functions are identical b. The level of technology c. Changes in government subsidies d. The nature of the costs. Answer: d. Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+