What is the relative efficiency of W with respect to X?

Single-station smoke detectors used in lodging operations differ from most smoke detectors used in residential properties primarily in that they:

a. send a louder alarm signal b. are more sensitive to rapid changes in temperatures c. are powered by a dedicated electrical circuit, not by batteries d. contain both a smoke detector and an integral alarm

A marketer analyzing a company's manufacturing costs and the level of sales volume needed to cover those costs is analyzing the ________ element of the marketing mix

A) product B) promotion C) place D) physical evidence E) price