Other Things Held Constant, Which of the Following Alternatives Would

Other things held constant, which of the following alternatives would increase a company's cash flow for the current year?

A) Increase the number of years over which fixed assets are depreciated for tax purposes.
B) Pay down the accounts payables.
C) Reduce the days' sales outstanding (DSO) without affecting sales or
Operating costs.
D) Pay workers more frequently to decrease the accrued wages balance.
E) Reduce the inventory turnover ratio without affecting sales or operating costs.