Roslin Robotics stock has a volatility of 25% and a current stock price of $70 per share. Roslin pays no dividends. The? risk-free interest is 6%. Determine the? Black-Scholes value of a? one-year, at-the-money call option on Roslin stock. The? Black-Scholes value of a? one-year, at-the-money call option on Roslin stock is: