Blue Chip Ltd has made an initial investment of R$200000$ in a new project.

Due to unfortunate miscalculations, an additional R$100000$ had to be invested to start up the project successfully.

The cost of capital is $11\mathrm{.}5\%.$

The investment is expected to generate the following cash inflows over the next five years:

Year $1$: R $20000$

Year $2$: R $100000$

Year $3$: R $400000$

Year $4$: R $400000$

Year $5$: R $500000$

The IRR is $...$; therefore, the investment should $...$

a$.$

$53\mathrm{.}02\%$; be undertaken.

b$.$

$48\mathrm{.}23\%$; not be undertaken.

c$.$

$60\mathrm{.}60\%$; not be undertaken.

d$.$

$70\mathrm{.}22\%$; be undertaken.