Option pricing is an important subject in the field of financial investment. Suppose the current price of a stock is $100 per share. Research shows that the spot price will move either up by 8% or down by 4% each period. Use the Binomial Option Pricing model to determine the price of a call option with a strike price of $110 and an expiration date of THREE periods. The risk-free rate is 3% and no dividend will be paid within the three periods.

After building the call premium tree and the delta value tree, how would you interpret the results? Numeric answers require at least four decimal points.

Answer: The self-made risk-free portfolio is composed of selling a call option at the call premium of $________(e.g., 1.1111) and buying ____ (e.g., 0.1111) shares of the stock from the spot market. No matter how the stock price moves in the next three years, the annual rate of return is guaranteed ____ % (e.g., 5.0123%).