The table here shows the no-arbitrage prices of securities A and B that we calculated. (Click on the icon located on the top-right corner of the data table below in order to copy its contents into a spreadsheet.) Security Security A Security B Market Price Today $237 $338 Cash Flow in One Year Weak Economy Strong Economy $0 $604 $604 $0 a. What are the payoffs of a portfolio of one share of security A and one share of security B? b. What is the market price of this portfolio? What expected return will you earn from holding this portfolio? c. What is the risk-free interest rate? a. What are the payoffs of a portfolio of one share of security A and one share of security B? (Select the best choice below.) A. Portfolio A+B pays $0 in both cases (i.e., it is risk free). B. Portfolio A + B pays $1208 in both cases (i.e., it is risk free). C. Portfolio A+B pays $604 in both cases (i.e., it is risk free). D. Cannot be determined without the discount rate. b. What is the market price of this portfolio? The market price of this portfolio will be $ 575. (Round to the nearest dollar.) c. What is the risk-free interest rate? The risk free rate is %. (Round to two decimal places.)