At year end $2019,$ Lamar Company's balance sheet shows total assets of $$6$ million, total llabilities and preferred stock of $$4\mathrm{.}5$ million, and $100\mathrm{.}000$ shares of common stock outstanding. It's book value per share would be therefore be$?$

$$15$ per share

$$60$ per share

$$45$ per share

$$10\mathrm{.}50$ per share