Approximate Precision Tools generated $$800,000$ in sales during $2017,$ and its year$-$end total assets were $$640000.$ Also, at year$-$end $2017,$ current liabilities were $$300,000,$ consisting of $$80,000$ of notes payable, $$120,000$ of accounts payable and $$100,000$ of accruals. Looking ahead to $2018,$ the company estimates that its assets and spontaneous liabilities must increase at the same rate as sales. Its profit margin will be $5\%,$ and its payout ratio will be $60\%.$ What is the company's self$-$supporting growth rate and how large a sales increase $($in dollars$)$ can the company achieve without having to raise funds externally?

$3\mathrm{.}96\%$;$,$$$31,683$

$2\mathrm{.}04\%$;$,$$$16,342$

$2\mathrm{.}84\%$;$,$$$22,754$

$2\mathrm{.}41\%$;$,$$$19,283$

$3\mathrm{.}36\%$;$,$$$26,850$