Which of the following is false regarding options? I. The writer of a call option has the obligation to purchase the underlying currency from the option purchaser if the option is exercised. II. The purchaser of a call option has the right to purchase the underlying currency at the strike price. III. The purchaser of a put option has the right to sell the underlying currency at the strike price. IV. The writer of a put option has the obligation to purchase the underlying currency from the option purchaser if the option is exercised a. I b. None of the choices c. III d. IV e