Could more than one correct answer

3. Suppose the interest rate is 5% per period. You hold a portfolio that longs 2 shares of the stock and borrows $40 cash. If the market price of the stock can be either $21 or $55 in the next period, then the following must be true for the payoff of the portfolio in the next period: a. If the stock price is $21, then the payoff of the portfolio will be $0 b. If the stock price is $21, then the payoff of the portfolio will be $84 c. If the stock price is $55, then the payoff of the portfolio will be $68 d. If the stock price is $55, then the payoff of the portfolio will be $152