Viger Corporation has a standard cost system in which it applies manufacturing overhead to products on the basis of standard machine$-$hours $($MHs$).$ The company has provided the following data for the most recent month:

Budgeted level of activity

Actual level of activity

Standard variable manufacturing overhead rate

Actual total variable manufacturing overhead

$8,200MHs$

$8,400MHs$

$$6\mathrm{.}90$ per $MH$

$$55,610$

What was the variable overhead rate variance for the month?

Multiple Choice

$$1,430$ Favorable

$$970$ Favorable

$$1,380$ Unfavorable