Need a quick response help me out

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

Yesbecase if u place it by a famous restaurant your get a better chance of pepole comeing to u