Y'all really out here gettin' mad at mods for doing their jobs. I literally roll my eyes watching you guys get mad. Unless it's academic that got deleted, shut your mouth.

So don't take my word i'm not exactly a mathematical person but i would assume a. because while selling the soap every month you increase in sells so you would by 11 percent. the you would get the factor 0.89 which if i had to guess would be the monthly profit over 11 probably wrong tho