i need help for Amazon

a. What is the risk profile of your company? How much overall risk is there in this firm? Where is this risk coming from (market, firm, industry or currency)? How is the risk profile changing?

b. What return would you have earned investing in this companys stock? Would you have under or outperformed the market? How much of the performance can be attributed to management?

c. How risky is this companys equity? What is its cost of equity?

d. How risky is this companys debt? What is its cost of debt?

e. What is this companys current cost of capital