Dec. $31,$ Dec. $31,$

Year $7$ Year $6$

Selected Statement of Cash Flow Data for the year ending December $31,$ Year $7$

Required

What was Wilmington Corporation's return on net operating assets $($RNOA$)$ in Year $7?$ Assume a statutory tax rate of $37\%.$

Select one:

a$.65\mathrm{.}1\%$

b$.42\mathrm{.}8\%$

c$.49\mathrm{.}8\%$

d$.67\mathrm{.}2\%$