Output (sandwiches per hour) Average total cost ($ per sandwich) 1 17.00 2 10.00 3 8.00 4 8.00 5 8.80 6 10.00 The table above shows output and costs of Evan's Subs, a typical perfectly competitive firm in a local market for sandwiches. Evan's fixed cost is $9 per hour. The current market price of a sandwich is $6. What is Evan's shut-down price? Select one: O a $4 per sandwich O b. $6 per sandwich O c. $5 per sandwich d. $3 per sandwich