A 6 month European call option on a non-dividend paying stock is currently selling for $6 and a 6 month European put option on the same stock is currently selling for $5 Both the call option and the put option have strike prices of $50. The under lying stock is currently selling for $51 The risk-free interest rate is 4% per annum for all maturities. Is there an arbitrage opportunity? If so, how would an arbitrageur exploit it and how much would he or she earn