Bling Corporation manufactures jeweled cell phone cases. The following materials standards have been established for the jewels used to decorate the cell phone cases. Standard quantity per case (grams) 4.00 Standard Price (SP) per gram of jewels $5.00 The following data relates to the production of the cell phone cases during June: Actual jewels purchased and used (grams) 1,500 Actual cost of jewels purchased $5,250 Actual number of cases produced 100 What is the materials price variance for jewels in June? O A. $7,500 unfavorable O B. $2,250 favorable C. $2,250 unfavorable OD. $7,500 favorable