The Dulac Box plant produces 500 cypress packing boxes in two 10-hour shifts. Due to higher demand, they have decided to operate three 8-hour shifts instead with one employee. They are now able to produce 600 boxes per day. What has happened to productivity?A. Productivity has not changed.B. It has increased by 4.17 boxes/hr.C. It has increased by 25%.D. It has decreased by 8.3%.