Should a firm shut down if its weekly revenue is $1 comma 000, its variable cost is $600, and its fixed cost is $800, of which $350 is avoidable if it shuts down? Why? The firm should A. produce because revenue of $1 comma 000 is greater than avoidable costs. B. produce because revenue of $1 comma 000 is greater than variable costs. C. produce because revenue of $1 comma 000 is greater than fixed costs. D. shut down because because variable costs are less than fixed costs. E. produce because revenue is positive.