Which of the following statements is (are) true about non-value-added activities? I. Non-value-added activities are often unnecessary and dispensable. II. Non-value-added activities may be necessary but are being performed in an inefficient and improvable manner. III. Non-value-added activities can be eliminated without deterioration of product quality, performance, or perceived value.

I only

II only

III only

I and II

I, II, and III