please help w/ this practice problem for my management accounting class

Steve's Plastics Manufacturing uses a normal job order costing system. The accounting records contain the following information: Estimated manufacturing overhead (overhead) costs $100,000 Actual manufacturing overhead costs $120,000 Estimated machine hours 20,000 Actual machine hours 25,000 The only cost driver is machine hours. Using normal job order costing, the amount of manufacturing overhead costs allocated to jobs during 2011 is: $125,000. $100,000. $150,000. $120,000