Explain, please.

Question 37 2 p [39] Baby Frames, Inc., evaluates manufacturing overhead in its factory by using variance analysis. The following information applies to the month of May: Actual Budgeted Number of frames manufactured 19,000 $4,100 Variable overhead costs 20,000 $2 per direct labor hour $22,000 Fixed overhead costs Direct labor hours 2,100 hours $20,000 0.1 hour per frame What is the fixed overhead spending variance