For a dividend paying firm, how is the projected addition to retained earnings calculated using the percentage of sales approach?

Multiple Choice

Net income $\backslash$times $($New Sales$/$Old Sales$)$

$($Cash dividends$/$Net income$)\backslash$times $($New sales$/$Old sales$)$

$($Retained earnings$/$Sales$)\backslash$times $($New Sales$/$Old Sales$)$

Net income $\backslash$times $(1$ Dividend payout ratio$)$

Net income $\backslash$times $(1$ Retention ratio$)$