Which of the following statements is correct regarding the Sweezy model of oligopoly?There is more than one correct answer to this question.You must mark all of the correct answers to receive full credit for this question.

Firms believe that competitors keep their output constant if they change their own output.

The model helps to explain oligopoly arrangements characterized by a leader and a follower.

Competitors match price decreases but do not match price increases..

Starting at the sticky price, firms face more elastic demand if they raise their prices than if they lower their prices.

Any change in marginal cost results in a change to the profit-maximizing output.