The price of a European call option today with maturity 12 months and strike price of $100 in the future is $15.0. The price of the stock is $94.0. What is the price of an European put option with maturity 12 months and strike price of $100? The riskless rate for 12 months is 3.2%.

Note: An European option can only be exercised on maturity date, unlike an American option that can be exercised earlier.