Outdoor Living Corporation manufactures sun umbrellas that use a canvas as the main raw material. Data related to the sun umbrellas for May follows: Standard quantity per unit of output (metres) Standard price per metre Actual materials purchased and used (metres) Actual cost of materials purchased Actual outputs in units What is the materials quantity variance for canvas for May? 3.5 $11.90 9,000 $89,250 2,500 O A. $2,479 unfavourable OB. $2,975 favourable O c. $2,975 unfavourable OD. $2,479 favourable