Answer:
B. Both economies of scope and economies of scale.
Explanation:
In microeconomics, economies of scale are the cost favorable circumstances that undertakings acquire because of their scale of activity, with cost per unit of yield diminishing with expanding scale.
Economies of scope are "efficiencies framed by assortment, not volume". In economics, "economies" is equivalent word to cost sparing and "scope" is synonymous with widening generation/benefits through differentiated items.