I am confused by the following question: All of the following actions are likely to increase Capital Turnover except ( for each action below, assume...

I am confused by the following question:

All of the following actions are likely to increase Capital Turnover  except (for each action below, assume all other numbers remain constant):

1. an increase in sales revenues.
2. a decrease in operating expenses per unit.
3. a decrease in a company's invested capital.
4. an increase in the number of units sold.