Dubberly Corporation's cost formula for its manufacturing overhead is $$32,600$ per month plus $$58$ per machine$-$hour. For the month of March, the company planned for activity of $7,920$ machine$-$hours, but the actual level of activity was $7,810$ machine$-$hours. The actual manufacturing overhead for the month was $$516,770.$

The activity variance for manufacturing overhead in March would be closest to:

Multiple Choice

$$24,810U$

$$24,810F$

$$6,380F$