As It Pertains to the Marketing Plan, Understanding the Causes

As it pertains to the marketing plan, understanding the causes of performance, regardless of whether that performance exceeded, met, or fell below the firm's goals is important because it

A) enables firms to make appropriate adjustments.
B) allows managers to demonstrate their effectiveness.
C) offers insights into crafting an appropriate mission statement.
D) should always be followed by eliminating underperforming SBUs.
E) allows firms to better assess customer loyalty.