37. Backyard Creations purchased 7,000 feet of copper tubing at a price of $2.70 per foot and used 7,200 feet during the period. The standard quantity allowed for the units produced is 7,300 and the standard price of the copper tubing is $2.50 per foot. What is Backyard Creations' direct materials quantity variance for the period? a. $250 favorable b. $500 favorable c. $750 favorable d. None of the above Unit 62, L02 A