Answer:
The answer is: B) $4,840 underapplied
Explanation:
First we calculate the estimated cost per direct labor hour:
$77,250 / 2,500 = $30.90 per direct labor hour
If only 2,400 direct labor hours were employed, then the estimated cost for total labor hours should have been $74,160 (= $30.90 x 2,400), but instead the total cost was $79,000 which is $4,840 underapplied. The actual cost per direct labor hour is $32.92 (= $79,000 / 2,400).