7. Manufacturing costs for product X include direct variable overhead S2 per unit, and fixed ovuthead S3 per un for product X include direct materials $18 per unit, direct labor $1 per uc oil, and fixed overhead S3 per unit for a total of 524 per unit. If producti Volume is increased by 10 thnits, how much will total manufacturing costs change in die tal manufacturing costs change in the short tern Assume that the new production volume is in the relevant range. A not enough information need to know the original volume B. increase by $190 C. increase by $210 D. increase by $220 E. increase by $240