4. EA13. LO 8.5 Acme Inc. has the following information available: Actual price paid for material $1.00 Standard price for material $0.90 Actual quantity purchased and used in production 100 Standard quantity for units produced 110 Actual labor rate per hour $ 15 Standard labor rate per hour $ 16 Actual hours 200 Standard hours for units produced 220 A. Compute the material price and quantity, and the labor rate and efficiency variances. B Describe the possible causes for this combination of favorable and unfavorable variances