How do managers plan for variable overhead​ costs? A. Planning to eliminate the variable overhead activities that add value for customers using the product or service. B. Planning the appropriate level of capacity or investment that will benefit the company in the long run. C. Planning to undertake only those variable overhead activities that add value for customers using the product or​ service, and to use the cost drivers in those activities in the most efficient way. Your answer is correct.D. Both A and B.