A Company Can Best Reduce the Life Cycle Costs of Product

A company can best reduce the life cycle costs of product and services by managing the revenues and costs associated with which function of the value chain?

A) Customer service is the best function to reduce the life cycle costs of product and services.
B) Support is the best function to reduce the life cycle costs of product and services.
C) Production is the best function to reduce the life cycle costs of product and services.
D) Design is the best function to reduce the life cycle costs of product and services.