European call and put prices on a common stock are shown in the following table along with additional information. Is there an arbitrage opportunity? If so, how can it be exploited? Show the cash flows now and at the options' expiration. Call price (c) Put price (p) Stock price (So) Strike price (K) Expiration (T) Risk-free rate (r) 10.50 8.00 72 65 7 months 2.5%