ConnellyCompany makes a product that is expected to require 2 hours of labor per unit of product. The standard cost of labor is $6.00 per hour. Connelly actually used 1.9 hours of labor per unit of product. The actual cost of labor was $6.25 per hour. Connelly made 1,100 units of product during the period. Based on this information alone, the labor usage variance is what?

a $660 unfavorable.

b $190 favorable.

c $600 favorable.

d $660 favorable.