Pastel Papers Incorporated produces wrapping paper. The standard direct materials quantity is 0.20 pound per unit and the standard rate is $0.30 per pound. During June, the company actually purchased and used 1,800 pounds of direct materials to produce 7,500 units, at an average cost of $0.40 per pound. What is the direct materials quantity variance?

A) $90 unfavorable
B) $60 unfavorable
C) $90 favorable
D) $60 favorable