Please help!! Only answer if you are 100% sure about the answer.

The following information is available for a company that operates in a perfectly competitive market. Current output 5000 units Current market price $5 Total cost $25,000 Marginal cost $4 Total variable cost $20,000 What is the best action for this firm? O Increase output in the short run and stay in the market the long run Increase output in the short run and decrease output in the long run O Shut down in the short run and exit in the long run O Shut down in the short run and produce in the long run O Reduce output in the short run and increase output in the long run