Which of the Following Statements Best Characterizes the Theory of Sustainability

Which of the following statements best characterizes the theory of sustainability?

A) Sustainability is an internal process in which companies match resources and objectives.
B) Sustainability is the idea that socially responsible companies will outperform their peers when they focus on the world's problems as marketing opportunities.
C) Sustainability cannot be socially responsible without a code of ethics and managerial support of that code.
D) Sustainability and ethical behaviour should never be viewed as the means of obtaining a competitive advantage.