Calculate the cost advantage index if the percentage cost of goods sold by the business is 40% and the average percentage cost of goods sold by its top three competitors are 50%, 60%, and 70%, respectively.

Command is: a. the ability to control information exchange within and across organizations involved in an incident. b. assumed by the individual who is the highest-ranking person on the scene regardless of experience or training level. c. based on the number of individuals or resources that one supervisor can manage effectively during an incident. d. directing, ordering, or controlling by virtue of explicit statutory, regulatory, or delegated authority.