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Walmart stock sells for $50/share. The annual interest rate is 2%, and the annual standard deviation on Walmart stock is 24%. The time to expiration of all options is 6 months. You are short 90 call options on Walmart with a strike price of 48. To delta hedge your position, you can buy or sell Walmart stock. To delta-gamma hedge your position, you can use Walmart stock and a put option on Walmart at 53. (Be careful with your delta on the put option!) Given all this: A: (15 points in total) Derive the position you will take if you want to delta hedge your position. B: (20 points) Derive the position you will take if you want to delta-gamma hedge your position. Walmart stock sells for $50/share. The annual interest rate is 2%, and the annual standard deviation on Walmart stock is 24%. The time to expiration of all options is 6 months. You are short 90 call options on Walmart with a strike price of 48. To delta hedge your position, you can buy or sell Walmart stock. To delta-gamma hedge your position, you can use Walmart stock and a put option on Walmart at 53. (Be careful with your delta on the put option!) Given all this: A: (15 points in total) Derive the position you will take if you want to delta hedge your position. B: (20 points) Derive the position you will take if you want to delta-gamma hedge your position