A binomial tree with three-month time steps is used to value a currency option. The domestic and

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A binomial tree with three-month time steps is used to value a currency option. The domestic and foreign risk-free rates are 2% and 4% respectively. The volatility of the exchange rate is 20%. What is the risk neutral probability of an up movement?
What is the price of a six month European put option with a strike price of $1.01 when the exchange rate is $1.0? How would you hedge a long position in this option?

Strike Price
In finance, the strike price of an option is the fixed price at which the owner of the option can buy, or sell, the underlying security or commodity.
Exchange Rate
The value of one currency for the purpose of conversion to another. Exchange Rate means on any day, for purposes of determining the Dollar Equivalent of any currency other than Dollars, the rate at which such currency may be exchanged into Dollars...
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