Please help me solve this problem. Here is the complete question below.

3. A soft drink bottler Incurred the following factory utility cost: $3,461 for 1,000 cases bottled and $3,570 for 1,600 cases bottled. Factory utility cost is a mixed cost containing both fixed and variable components. The variable factory utility cost per case bottled is closest to: $3.46 $2.16 O $2.23 O $0.18