A​ manager's job performance is quantified by evaluating efficiency and effectiveness because
A. effectiveness and efficiency as a measure are defined by the​ manager's ability to get the most output from the least amount of input or resources.
B. effectiveness measures how well managers are able to get their employees to work more effectively.
C. effectiveness and efficiency go hand in​ hand, and a good manager accomplishes both.
D. effectiveness and efficiency are attributed to both hourly employees and managers.
E. effectiveness is a measure of a​ manager's abilities, and is a true measure of how good he or she is at the job.