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 750 machine hours to make 86 connectors and spent $5,100 in variable manufacturing costs and $7,800 in fixed manufacturing overhead costs. Calculate the variable overhead efficiency variance for Radiant. More Info OA. $413 U OB. $1,101 F OC. $688 F 800 machine hours per month (80 connectors x 10 machine hours per connector) $5,000 in variable manufacturing overhead costs $7,250 in fixed manufacturing overhead costs OD. $275 F Click to select your answer. Print Done