The standard amount of materials required to make one unit of Product Q is 8 pounds. Tusa's static budget showed a planned production of 11,000 units. During the period the company actually produced 11,100 units of product. The actual amount of materials used averaged 8.1 pounds per unit. The standard price of material is $1 per pound. Based on this information, the materials usage variance was:

A. $1,110 unfavorable.

B. $1,100 favorable.

C. $1,110 favorable.

D. $1,100 unfavorable.