3. (40 points) For a stock: (a) The price is 55. (b) The continuous dividend rate is 0.025. c) = 0.2 The continuously compounded risk-free rate is 0.04. A portfolio has three European call options on this stock. The first allows purchase of 100 shares of the stock at the end of 3 months at strike price 55. . The second allows purchase of 200 shares of the stock at the end of 6 months at strike price 60. The third allows purchase of 200 shares of the stock at the end of a year at strike price 65 Calculate delta for this portfolio