Radon Corporation manufactured 37,500 units during March. The following foed overhead data pertain to Marche Production Machine-hours Foed overhead costs for March Actual 37,500 units 10,375 hours $233,400 Static Budget 34,000 units 10,200 hours $224,400 What is the fixed overhead production - volume variance? O A. $23,100 unfavorable O B. $9,000 favorable O c. $23,100 favorable OD. $9,000 unfavorable