Which Statement About the Argument Underlying the Black-Scholes-Merton Model Is

Which statement about the argument underlying the Black-Scholes-Merton model is INCORRECT?

A) The argument utilizes a practice common among option writers in nineteenth-century London: hedge an option position with an opposing stock trade.
B) The argument combines and solves the pricing and hedging problem in one stroke.
C) The argument assumes that call and underlying stock prices are positively correlated.
D) The argument combines the call and the underlying stock to form a riskless portfolio that is assumed to grow at the risk-free rate.
E) The argument assumes that all traders are risk-neutral,and therefore one can value the option by taking expected discounted values.