The standard factory overhead rate is $7.50 per machine hour ($6.20 for variable factory overhad and $1.30 for fixed overhead) based on 100% capacity of 80,000 machine hours. The standard cost and the actual cost of factory overhead for the production of 15,000 units during August were as follows:Actual Variable Factory Overhead: $360,000fixed factory overhead 104,000Standard hours allowed for units produced: 60,000 hoursWhat is the amount of the factory overhead controllable variance?options for both are:a) 12,000Ub) 12,000Fc) 14000Ud) 26000U