The price of a European call option to sell a share of underlying stock for $50 is $5 and it is held until maturity. Assume the volatility of the underlying stock price is 20% per annum. The delta of the call option is 0.75. a. Under what circumstances will the seller of the option make a profit? Provide a diagram illustrating how the profit from a short position in the option depends on the stock price at maturity of the option b. What is the standard deviation of the percentage stock price change in one trading day? c. What does it mean to assert that the delta of the call option is 0.75