Based on the following information, what is the company$$s Unlevered FCF for the period: EBIT of $$500$ mm$,$ tax rate of

$20\%,$ Depreciation and Amort of $$200$ mm$,$ Capex of $$250$ mm and an investment of $$50$ mm in Net Working Capital.

a$.$ $$500$ mm

b$.$ $$300$ mm

c$.$ $$650$ mm

d$.$ $$225$ mm