Consider a call option on euro with a strike price of $ 1.20/€ in the following economy:
Current spot exchange rate = $ 1.20/€
U.S. dollar interest rate = 1 % per annum
Euro interest rate = 2 % per annum
Time until expiration = 9 months
Standard deviation of the spot rate = 15%
Compute the fair price of this euro call using the Black-Scholes option pricing model.