Golden Harvest is a restaurant located inside a five-star hotel. It caters mainly to customers who are concerned about quality dining rather than the prices. In this scenario, which of the following will be a part of Golden Harvest's strategic group?a. a food kiosk in an adjacent subway station. b. a mobile food cart parked opposite to the five-star hotel. c. a nearby fast-food restaurant. d. a premium roof top restaurant in the same city.

Which of the following statements is (are) true? i. free entry to a perfectly competitive industry results in the industry's firms earning zero economic profit in the long run, except for the most efficient producers, who may earn economic rent. ii. in a perfectly competitive market, long-run equilibrium is characterized by lmc < p < latc. iii. if a competitive industry is in long-run equilibrium, a decrease in demand causes firms to earn negative profit because the market price will fall below average total cost.