$1.$ Which of the following is an example of competitive advantage$($s$)$ one would seek?

A$.$ Lowest price$/$cost: delivered vs$.$ lifetime of the product$/$service$.$

B$.$ Highest quality: product$/$service performance, tolerances, purity, and customer service.

C$.$ Most dependable$/$reliable: product or service, delivery or availability, field service$/$repair$.$

D$.$ Most flexible: broad product line, customized products & services, fast response$/$delivery times.

E$.$ All of the above