Answer:
c. $3,200 favorable.
Explanation:
We know that
Total controllable cost variance = Budgeted overhead cost - actual overhead cost
where,
Budgeted overhead cost = Variable overhead + Fixed overhead
where,
Variable overhead = 40,000 units × $2 = $80,000
And, the fixed overhead = $72,000
So, the budgeted overhead = $152,000
And, the actual one is $148,800
So, the total controllable cost variance would be
= $152,000 - $148,800
= $3,200 favorable