Erin makes 800 items a day. Each day she spends 8 hours producing those items. If hired elsewhere she could have earned $300 an hour. The item sells for $20 each. Production occurs seven days a week. If the explicit costs total $200,000 per month, what is her accounting profit?
a. $60,000
b. $280,000
c. $350,000
d. $540,000