Your firm's research scientists can begin an exciting new project at a cost of $**10**m now, after which there’s a:

- 70% chance that cash flows will be $
**1**m per year forever, starting in 5 years (t=**5**). This is the A state of the world. - 20% chance that cash flows will be $
**3**m per year forever, starting in 5 years (t=**5**). This is the B state of the world. - 10% chance of a major break through in which case the cash flows will be $
**20**m per year forever starting in 5 years (t=**5**), or the project can be expanded by investing another $**10**m (at t=**5**) which is expected to give cash flows of $**60**m per year forever, starting at year 9 (t=**9**). This is the C state of the world.

The firm's cost of capital is **10**% pa.

What's the present value (at t=0) of the option to expand in year 5?