8.13 Consider an alternative to problem 8.12 that consists of establishing a foothold in the market for a total cost of $18 million, at the maximum rate of $7.5 million per year. It would be possible to delay and interrupt the investment but the expansion into a full-scale operation cannot take place before the foothold investment is completed. The expansion would require an additional investment of $22 million and recovery in case of posterior exit would amount to $20 million. What is the value of the foothold option? Compare your result to that of problem 8.12.