Use the following information for questions 6-9. The columns indicate the number of trains running. Total railroad profits are the total profits to the railroad from running the specified number of trains. Total lost farmer profits are total profits the farmer loses from a specified number of trains running. Trains 1 2 3 Total Railroad Profit $100 $200 $300 Total Lost Profit for Farmer $40 $130 $250 What is the socially optimal number of trains? A. 0 B. 1 C. 2 D. 3