Marked out of 1.00 Dubberly Corporation's cost formula for its manufacturing overhead is $30,600 per month plus $64 per machine-hour. For the month of March, the company planned for activity of 7,900 machine-hours, but the actual level of activity was 7,880 machine-hours. The actual manufacturing overhead for the month was $558,610. The manufacturing overhead in the planning budget for March would be closest to: Select one: a. $534,920