Sales of hot dogs at the corner of $24$th and Lex. follow the following patterns: $60\%$ of the days, $80$ are sold; $30\%$ of the days, $90$ are sold; and the remaining days, $100$ are sold. Given the vendor plans to stock $70$ dogs each day, What approx. expected CSL could the vendor expect?

$90\%$

$82\%$

$60\%$

$0\%$