Using cost$-$volume$-$profit analysis, we can conclude that a $20$ percent reduction in variable costs will:

A$)$ Not affect the break$-$even sales volume if there is an offsetting $20$ percent increase in fixed costs

B$)$ Reduce the break$-$even sales volume by $20$ percent

C$)$ Reduce total costs by $20$ percent

D$)$ Reduce the slope of the total costs line by $20$ percen