Laura sells mushrooms and strawberries to tourists. If Laura spends the morning collecting only mushrooms, she picks 8 pints; if she spends the morning picking strawberries, she collects 6 pints. If she picks some of each, however, she can harvest more total pints: 6 pints of mushrooms and 4 pints of strawberries. Suppose that Laura's time is valued at $ 10 an hour. What can you say about her economies of scope? That is, what is the sign of her measure of economies of scope, SC?