Performance Nutrition produces a protein shake which contains whey protein as one of its ingredients. The whey protain (materials) standards for each batch of protein shake produced are 16 pounds of whey protein at a standard cost of $5.00 per pound. During July, Performance Nution purchased and used 59,000 pounds of whey protein at a total of $178,000 to make a total of 3,600 batches of protein shake. What is the materiais arity variance for whey protein in July? OA. $116,600 unfavorable OB. $7,000 favorable OC. $116,600 favorable OD. $7,000 unfavorable Click to select your answer.