Wangerin Corporation applies overhead to products based on machine-hours. The denominator level of activity is 7,000 machine-hours. The budgeted fixed manufacturing overhead costs are $245,000. In April, the actual fixed manufacturing overhead costs were $249,900 and the standard machine-hours allowed for the actual output were 7,300 machine-hours. Required: a. Compute the budget variance for April. b. Compute the volume variance for April.