A European put option on a certain stock has a strike price of 50, a time to maturity of six months, and an implied volatility of 27%. A European call option on the same stock with a strike price of 30, a time to maturity of six months, and an implied volatility of 30%. What is the arbitrage opportunity open to a trader?

Select one:

a. Buy the call, sell the put and short the stock

b. Buy the call and sell the put

c. Sell the call and buy the put

d. Buy the put, sell the call and long the stock