Firms that employ eFirms that employ exceptionally productive resources Question 41 options: Have lower costs than other firms in the industry and are able to earn positive economic profit in the long run. Earn zero economic profit. Will typically have to pay the exceptional resource economic rent equal to the reduction in cost attributable to employing the exceptionally productive resource. Both a and b. Both b and c.xceptionally productive resources Question 41 options: Have lower costs than other firms in the industry and are able to earn positive economic profit in the long run. Earn zero economic profit. Will typically have to pay the exceptional resource economic rent equal to the reduction in cost attributable to employing the exceptionally productive resource. Both a and b. Both b and c