Atriangle has 2 sides measuring 12cm and 4cm. what could be the possible lengths of the 3rd side. ( explain in steps)

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