A natural gas energy company must choose between two mutually exclusive extraction projects, and each costs $12 million.

A natural gas energy company must choose between two mutually exclusive extraction projects, and each costs $12 million. Under Plan D, all the natural gas would be extracted in 1 year, producing a cash flow at t = 1 of $14.4 million. Under Plan E, cash flows would be $2.1 million per year for 20 years. The firm's WACC is 13%.