Ridgeway Corporation uses direct labor hours to allocate overhead to Work-in-Process. The company's budgeted overhead is $420,000 and it expects to produce 40,000 vases this period. It takes 2 direct labor hours to produce one vase. If 60,000 direct labor hours are actually worked during the period, how much overhead should be allocated to the Work-in-Process inventory?

$210,000

$315,000

$420,000

$630,000

None of these.