A contractor plans to excavate 3,900 bank cubic yards from a site. He needs to have 1,250 compacted cubic yards for the backfill of excavations. The soil test shows that the soil has a bank density of 1,800 pounds per cubic yard, a loose density of 1,500 pounds per cubicyard, and a compacted density of 2,400 pounds per cubic yard. What is the shrinkage percent for the soil? Select one: a. 25.00% b. 16.67% c. 10% d. 20.00%