Keenes Systems allocates manufacturing overhead based on machine hours. Each connector should require 10 machine hours. According to the static budget, Keenes expected to incur the following (Click the icon to view the static budget information) During August, Keenes actually used 800 machine hours to make 95 connectors and spent $5,200 in variable manufacturing costs and $9,100 in fixed manufacturing overhead costs. Calculate the variable overhead efficiency variance for Keenes OA. $2,112 F B. $5,488 F C. $1,688 F OD. $3,800 U More info 400 machine hours per month (40 connectors 10 machine hours per connector) $4,500 in variable manufacturing overhead costs $6,210 in fixed manufacturing overhead costs Print Done - X