Assembly line workers at Pharoah Manufacuring worked a total of 13700 direct labor hours to produce 37800 units. The standard for producing one unit is 15 minutes at a wage rate of $11.7. If the actual wage rate was 12.2 per direct labor hour. Pharoah's direct labor rate variance is

a. 4725 favorable

b. 6850 favorable

c. 6850 unfavorable

d. 4725 unfavorable