In the early 1990's, a study found that moderate daily consumption of red wine reduced the incidence of heart disease in labratory rats. As a result of national press coverage of the report, the demand for red wine increased dramatically. Assume that the red wine market satisfies all of the attributes of perfect competition. Further assume tat red grapes are the most expensive input into the red wine production process.

In the early 1990's, a study found that moderate daily consumption of red wine reduced the incidence of heart disease in labratory rats. As a result of national press coverage of the report, the demand for red wine increased dramatically. Assume that the red wine market satisfies all of the attributes of perfect competition. Further assume tat red grapes are the most expensive input into the red wine production process.

Graph the inital reaction of individual incumbent firms to the increase in market demand. On your graph, identify the firm's revenue and cost structure, including the marginal cost and average total cost curves. Ensure that your graph shows the profit region. Will this result last?