please show all work on paper. Not on excel

15) Kelsey Corp. is considering an opportunity that requires an investment of $1,000,000 today and will provide $250,000 one year from now, $450,000 two years from now, and $650,000 three years from now. The internal rate of return of this project is closest to: a) 10.2%. b) 12.2% c) 14.2%. d) 16.2%