Put$-$Call Parity is fundamental to option pricing. The formula is: C $$ P $$ S $+$ X$/(1+$r$)$t $=0$ where C is the call price, P is the put price, S is the stock price, X is the exercise price, r is the interest rate and t is the time to maturity. Use Put$-$Call Parity to value the following put option when C $=7\mathrm{.}50,$ S $=50,$ X $=50,$ r $=5\%,$ and t $=1$:

A$.$

the put is worth $$5\mathrm{.}12.$

B$.$

the put is worth $$7\mathrm{.}50.$

C$.$

the put is worth $$9\mathrm{.}88.$

D$.$

the put is worth $$12\mathrm{.}50.$