We learned in week $7$ that the overall operating ratio for Class I railroads was in

the $70\%$ range. What is the approximate operating ratio of airlines for the period

$2001-2023?$

$92\mathrm{.}3\%$

$99\mathrm{.}1\%$

$99\mathrm{.}6\%$

$91\mathrm{.}6\%$