Suppose the spot exchange rate between U.S. dollar and Canadian dollar is US$1.03/C$. The U.S. dollar risk-free rate is 2% per annum, compounded annually. The price of a two-year European call option and put option with an exercise price of US$1.05/C$ is US$4.45 and US$4.54, respectively. What is the Canadian dollar risk-free rate?