Apple Company recently reported operating income of $$4\mathrm{.}2$ million, depreciation of $$2\mathrm{.}10$ million, and had a tax rate of $25\%.$ The firm's expenditures on fixed assets and net operating working capital totaled $$0\mathrm{.}90$ million. How much was its free cash flow, in millions?

a$.$ $$3\mathrm{.}00$

b$.$ $$3\mathrm{.}3$

c$.$ $$1\mathrm{.}2$

d$.$ $$2\mathrm{.}25$

e$.$ $$4\mathrm{.}35$