Roslin Robotics stock has a volatility of 36% and a current stock price of $71 per share. Roslin pays no dividends. The risk-free interest is 4%. 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 $. (Round to the nearest cent.)