Which of the Following Quotations Best Illustrates a Tradeoff

Which of the following quotations best illustrates a tradeoff?

A) "If the firm reorganized its production process, it could produce more widgets and more gadgets."
B) "The firm has been able to lower costs due to its extensive experience in building widgets."
C) "The firm should sell more gadgets, even if it means hiring more workers."
D) "If the firm invests more in capital equipment, it can expand sales next year."
E) "The more and more gadgets the firm produces, the bigger the fall in widget production."