For Mature Industries Three Cost Drivers Are Especially Critical

For mature industries three cost drivers are especially critical:

A) Economies of scale, the experience curve, and low overheads
B) Low-cost inputs, low overheads (or, more generally, good efficiency in using all inputs) , and economies of scale
C) Low-cost inputs, R&D expenditures, and economies of scope
D) Economies of scale, economies of scope, and R&D expenditures