Presented is a graph of total costs for a fast food restaurant where total costs are plotted on the vertical axis and activity level is plotted on the horizontal axis:

If management makes a decision to more fully automate food preparation that will decrease variable costs, the impact on the graph for total costs will most likely be

Group of answer choices

An increase in the slope of the total cost line

A decrease in the slope of the total cost line

A decrease in the vertical axis intercept

An increase in the vertical axis intercept