An option to buy a stock is priced at $300. If the stock closes above 30 on May 15, the option will be worth $1100. If it closes below 20. the option will be worth nothing, and if it closes between 20 and 30 (inclusively), the option will be worth $300. A trader thinks there is a 40% chance that the stock will close in the 20-30 range, a 30% chance that it will close above 30, and a 30% chance that it will fall below 20 on May 15. Complete parts (a) through (c). How much does she expect to gain? $ (Round to the nearest dollar as needed.) An option to buy a stock is priced at $300. If the stock closes above 30 on May 15, the option will be worth $1100. If it closes below 20. the option will be worth nothing, and if it closes between 20 and 30 (inclusively), the option will be worth $300. A trader thinks there is a 40% chance that the stock will close in the 20-30 range, a 30% chance that it will close above 30, and a 30% chance that it will fall below 20 on May 15. Complete parts (a) through (c). How much does she expect to gain? $ (Round to the nearest dollar as needed.)