Direct Labor Variances

Bellingham Company produces a product that requires $9$ standard direct labor hours per unit at a standard hourly rate of $$20\mathrm{.}00$ per hour. If $5,600$ units used $48,900$ hours at an hourly rate of $$20\mathrm{.}80$ per hour, what is the direct labor $($a$)$ rate variance, $($b$)$ time variance, and $($c$)$ cost variance? Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number.

a$.$ Direct labor rate variance $fill in the blank $1$

b$.$ Direct labor time variance $fill in the blank $3$

c$.$ Direct labor cost variance $fill in the blank $5$