Radiant Systems allocates manufacturing overhead based on machine hours. Each connector should require 10 machine hours. According to the static budget, Radiant expected to incur the following (Click the icon to view the static budget information) During August, Radiant actually used 400 machine hours to make 130 connectors and spent $5,500 in variable manufacturing costs and $6,400 in fixed manufacturing overhead costs. Calculate the variable overhead cost variance for Radiant. Data Table O A. $9,125 F OB. $1,000 U OC. $10,125 F OD. $11,125 F 400 machine hours per month (40 connectors x 10 machine hours per connector) $4,500 in variable manufacturing overhead costs $9.450 in fixed manufacturing overhead costs