You are considering the following $2$ mutually exclusive projects. Using the equivalent annual annuity method and a cost of capital of $10\%,$ which project should be selected? $($Round to nearest R$)$ Project A has the following cash flows$($year$0$:$20,000,$Year$1$:$15,000,$ year$2$:$20,000,$ Project B Year Cash Flow Cashflow $($year$0$:$20,000,$ year$1$:$5,000,$ year$2$:$10,000,$year$3$:$15,000,$year$4$:$50,000).$

a$.$

Project B because of an EAA of R$12,060$

b$.$

Project A because of an EAA of R$5,857$

c$.$

Project B because of an EAA of R$38,320$

d$.$

Project A because of an EAA of R$10,165$