Kirstin is thinking about opening an Italian restaurant and needs to buy a dough maker. Machine A has fixed costs of $300 and variable costs of $1/pound. Machine B has fixed costs of $1000 and variable costs of $0.30/pound. What is the crossover point? For 500 pounds of dough, which machine is better? O 1857; Machine A 538; Machine A 538; Machine B 1000; Machine A 1000; Machine B