Which of the Following Is True of Critical Path

Which of the following is true of critical path?

A) It is essential to perform what-if calculations under different projected cost and revenue conditions.
B) It acts as the foundation for analysis using financial controls by using the firm's balance sheet and income statement.
C) It automatically orders a fixed number of items every time an inventory level falls to a predetermined point.
D) It represents the quickest time in which the entire project can be finished, assuming everything goes according to schedule and plans.
E) It gives top managers, a fast, but comprehensive view of the business.