27. value: 2.00 points You buy a share of stock, write a 1-year call option with X = $15, and buy a 1-year put option with X = $15 Your net outlay to establish the entire portfolio is $13.9. The stock pays no dividends. What is the risk-free interest rate? (Do not round intermediate calculations. Round your answer to 2 decimal places. Omit the "$"sign in your re Risk-free rate 753 %