Ultimate U-Bolts (UU)paid $161,175 for Direct Labor This Month,paying

Ultimate U-bolts (UU) paid $161,175 for direct labor this month,paying $1.50 cents less per hour than planned.Fifty-four thousand pounds of bolts were produced and direct labor was paid for 9,210 hours.Producing one pound takes ten minutes.Which is true?

A) The workers were efficient because Ultimate U-bolts saved $825 overall
B) The workers were inefficient because they used 210 more hours than allowed
C) The direct labor efficiency variance is $3,780 unfavorable
D) The direct labor efficiency variance cannot be calculated from the information provided
E) None of the choices are correct