The following data relate to direct labor costs for the current period:

Standard costs $,7,200$ hours at $$11\mathrm{.}60$

Actual costs $,6,300$ hours at $$10\mathrm{.}30$

The direct labor time variance is

a$.$ $$10,440$ unfavorable

b$.$ $$9,270$ favorable

c$.$ $$9,270$ unfavorable

d$.$ $$10,440$ favorable