Direct Labor Variances

Alvarado Company prosuces a product that requires $4$ standard direct labor hours per unit at a standard hourly rate of $$17,00$ per hour. If $2,700$ unlts used $11,200$ hours at an hourly rate of $$16\mathrm{.}15$ per hour, what is the direct labor $($a$)$ rate varlance, $($b$)$ time variance, and $($c$)$ cost varlance? Enter a f$$vorable variance as a negative number using a minus sign and an unfavorable variance as a positive number.

a$.$ Olrect labor rate variance

b$.$ Direct labor time variance

c$.$ Direct labor cost varlance