Cullumber Company's standard labor cost of producing one unit of Product DD is $3\mathrm{.}80$ hours at the rate of $$10\mathrm{.}90$ per hour. During August, $41,500$ hours of labor are incurred at a cost of $$11\mathrm{.}05$ per hour to produce $10,800$ units of Product DD$.$

$($a$)$

Compute the total labor variance.

Total labor variance

$($b$)$

Compute the labor price and quantity variances.

Labor price variance

Labor quantity variance $$

$$

$($c$)$

Compute the labor price and quantity variances, assuming the standard is $4\mathrm{.}1$ hours of direct labor at $$11\mathrm{.}20$ per hour.

Labor price variance

$ $$

Labor quantity variance

$ $$