The Robertson & Associate Firm is contemplating about taking on an R$123900$ project. Over a $30-$month period, the project will generate cash flows of R$4894,35$ per month. What is the rate of return on this project?

a$.$

$9,53\%$

b$.$

$13,59\%$

c$.$

$16,71\%$

d$.$

$1,13\%$