Penn Company reports net operating profit after tax $($NOPAT$)$ of $$3,306$ million in $2017.$ Its net operating assets at the beginning of $2017$ are $$10,215$ million. Assuming a $6\mathrm{.}66\%$ weighted average cost of capital $($WACC$),$ what is Penn's residual operating income for $2017?$

A$.$ $ $864$ million

B$.$ $$2,626$ million

C$.$ $$3,305$ million

D$.$ $$1,699$ million