A local bakery produces 600 loaves of bread each day in three 10-hour shifts. Due to an increase in demand, they decide to operate in four 8-hour shifts instead. They are now able to produce 800 loaves of bread each day. What has happened to labor productivity? O It has decreased by 20% It has increased by 20% It has increased by 25% It has increased by 33% O Productivity has not changed