A young listed company developing drugs for neurological diseases . So far the company has not shown any sales due to the typically long lead times to produce medicines . The market now is on is volatile , its beta value = 2 , the access to capital is uncertain in the long term and patents are important. The company is considering either use the payback method or discounted cash flow analysis or a combination of both to evaluate competing investment alternatives. Discuss and justify which of these three options the company should rely on when to make investment decisions