Final answer:
Even if profit is negative, if revenues are greater than variable costs, it's best to stay open in the short run.
Step-by-step explanation:
Even if profit is negative, if revenues are greater than variable costs, then it's best to stay open in the short run. This is because as long as revenues cover variable costs, the firm can minimize its losses by continuing operations. However, if revenues are less than variable costs, it would be more beneficial for the firm to shut down and only incur its fixed costs.