Lower Bound for European cal Option prices: No dividends Equation 8.1, page 173) C之 rT 0 Ke Options, Futures, and other Derivatives, 5th edition 2002 by John C. HullOptions, Futures, and Other Derivatives, 5th edition © 2002 by John C. Hull 8.6 Lower Bound for European Call Option Prices; No Dividends (Equation 8.1, page 173) c  S0 –Ke -rT