Patel's Sisters has the following data for FY $2019$:

Net income $=$ $$600$

Net operating profit after taxes $($NOPAT$)=$ $$700$

Total assets $=$ $$2,500$

Short$-$term investments $=$ $$200$

Stockholders' equity $=$ $$1,800$

Total debt $=$ $$700$

Total operating capital $=$ $$2,100.$

WACC $=10\%.$

What is its economic value added $($EVA$)?$

a$.$$$490\mathrm{.}00$

b$.$ $$420\mathrm{.}11$

c$.$ $$465\mathrm{.}50$

d$.$ $$399\mathrm{.}11$

$($Show work please$)$