Which of the Following Best Describes Functional Strategy

Which of the following best describes functional strategy?

A) A strategy for determining the firm's overall attitude towards growth and the way it will manage its businesses or product lines.
B) A strategy at the business-unit or product-line level that focuses on improving a firm's competitive position.
C) A strategy by which managers in specific areas decide how best to achieve corporate goals through productivity.
D) A strategy that assists first-line managers in making day to day decisions about motivating employees.