Costco buys a Euro put option (contract size: €125,000) at a premium of $0.13/€. The exercise price is $1.18/€:
a. If the spot at expiration is $1.27/€, what is the Costco's profit?
b. If the spot at expiration is $1.09/€, what is the Costco's profit?
c. If the spot at expiration is $1.00/€, what is the Costco's profit?