The argument above assumes that A. it is more cost-effective for small farmers to eliminate the use of commercial fertilizers and pesticides than it is for large farmers to do so. B. a sufficient amount of manure will be available for the fields of large farmers. C. larger farmers would not realize similar cost benefits by using treated sewage sludge instead of commercial chemical fertilizers. D. large farmers generally look to small farmers for innovative ways of increasing crop yields or reducing operating costs. E. the smaller the farm, the more control the farmer has over operating costs.