please explain

Your answer is correct TracyWood Company, a highly automated manufacturer, compiled the following data for the current period: Budgeted Manufacturing Overhead Budgeted Direct Labor Hours Budgeted Direct Labor Cost Budgeted Machine Hours Actual Manufacturing Overhead incurred Actual Direct Labor Hours used Actual Machine Hours used $600000 200000 hours $300000 100000 machine hours $500000 110000 hours 80000 hours Assuming that TracyWood Company uses machine hours as a cost driver, determine the amount of overapplied or underapplied overhead for the current period? Underapplied by $20000 Overapplied by $150000 Underapplied by $50000 Underapplied by $100000