How did the stranger get a large sum of reward in the fable the Song Family's Secret Formula?

A、HeusedtheformulatohelptheKingofWuwinthewaratsea;
B、Heusedtheformulatodoclothbleachingandmadeafortune;
C、Hesoldtheformulatosomeoneelseatahighprice;
D、Hejoinedthenavyandbehavedbravelyinthewar.