Please explain the solution to this general accounting problem with accurate explanations.

Silver stream Pumps, Inc. manufactures pumps for agricultural irrigation systems. For the year, management estimated that the total manufacturing overhead would be $1,200,000. Management decided to use direct labor hours to apply manufacturing overhead and budgeted 90,000 direct labor hours. The balance in over- or under-applied overhead is deemed to be small. The following information was compiled before an adjustment had been made to close Manufacturing Overhead Control: Information | Amount ($) Raw Materials Inventory ! 290,000 Work in Process Inventor - 210,000 Finished Goods Inventory 920,000 Actual Direct Labor Hours Used 55,000 Actual Overhead Incurred 1,150,000 For the year, manufacturing overhead was: A. $150,000 under-applied B. $150,000 over-applied C. $170,000 over-applied D. $170,000 under-applied