You have performed the following trading strategy at time 0: 1. Write a call option on 100 shares of Stock E; 2. Buy a put option on 100 shares of Stock E with the same strike price and maturity as the written call; 3. Purchase 100 shares of Stock E. Required: Assume the call and put options are European style, show the above strategy is delta-neutral. [Hint: draw payoff diagrams.]