The division of costs between variable and fixed is as follows: Management is considering a plant expansion program for the following year that will permit an increase of $11,280,000 in yearly sales. The expansion will increase fixed costs by $4,000,000 but will not affect the relationship between sales and variable costs. Required: 1. Determine the total variable costs and the total fixed costs for the current year. Total variable costs Total fixed costs \$ 2. Determine (a) the unit variable cost and (b) the unit contribution margin for the current year. Unit variable cost $