Suppose a farm is incurring $50,000 a year in fixed costs. Its variable cost is $25,000 per year. How would you recommend whether the farm should operate the farm that year in the following cases? Make sure to show your work and compute profit or losses in each case. (a) The expected revenue is $80,000; (b) the expected revenue is $60,000; (c) expected revenue is $20,000.