$2.$ The price of a European call option on a non$-$dividend$-$paying stock with a strike price of $$79$ is $$8.$ The stock price is $$75,$ the continuously compounded risk$-$free rate $($all maturities$)$ is $4\mathrm{.}50\%$ and the time to maturity is one year.

a$.$ What is the price of a one$-$year European put option on the stock with a strike price of $$79?($Hint: Use the Put$-$Call Parity Formula$).$