Suppose research and development costs $$2$ millioni initially and $$2$ million more for each of the next three years. At the end of the $4$th year, the firm has an option to either proceed with the product $($investment of $$100$ million$)$ or abandon it$.$ The cash out value at the end of the fourth year is $$120$ million with $60\%$ probability and $$0$ with $40\%$ probability. Use the real options approach to determine the value of this project