CTN Company is evaluating a new product design and is comparing two design alternatives. The estimated receipts and disbursements associated with each alternative are shown below. MARR is 10% per year. Alternative 1: Alternative 2: 1) Which alternative is better for CTN Company according to the Internal Rate of Return method? 2) Which alternative is better for CTN Company according to the External Rate of Return method? 3) Re-solve question 1 using Excel