The following data relate to direct labor costs for August: Actual costs: 5,500 hours at $24.00 per hour. Standard costs: 5,000 hours at $23.70 per hour. What is the direct labor rate variance?

a)	$1,650 unfavorable

b)	$1,500 unfavorable

c)	$1,650 favorable

d)	$1,500 favorable