Answer:
D. $511,920
Step-by-step explanation:
For determining the estimated manufaturing overhead first determined the predetermined overhead which is shown below:
= (Actual manufacturing overhead - underapplied overhead) ÷ (actual direct labor hours)
= ($506,920 - $23,440) ÷ (20,400 hours)
= $23.7
Now the estimated manufacturing overhead is
= $23.7 × 21,600 hours
= $511,920