If the firm commitment price is $$15$ and one million shares are sold in the primary market for $$15\mathrm{.}50$ and then resold in the secondary market for $$15\mathrm{.}75,$ what is the underwriter's profit$/$loss$?$

A$)$ $$750,000.$

B$)-$$$750,000.$

C$)-$$$500,000.$

D$)0$

E$)$ $$500,000.$