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Options, Futures, and Other Derivatives, 5th edition 169。 2021 by John C. Hull Properties of Stock Option Prices Chapter 8 Options, Futures, and Other Derivatives, 5th edition 169。 2021 by John C. Hull Notation ? c : European call option price ? p : European put option price ? S0 : Stock price today ? K : Strike price ? T : Life of option ? ?: Volatility of stock price ? C : American Call option price ? P : American Put option price ? ST :Stock price at option maturity ? D : Present value of dividends during option’s life ? r : Riskfree rate for maturity T with cont p Options, Futures, and Other Derivatives, 5th edition 169。 2021 by John C. Hull Effect of Variables on Option Pricing (Table , page 168) c p C P Variable S0 K T ? r D + + – + ? ? + + + + + + + – + – – – – + – + – + Options, Futures, a