You have bought a stock for a $180. You are expecting to get a return of 15/% while the volatility of your stock is 25%. if you intend to sell the stock after one year. a- is the stock price range (upper and lower bound) assuming that the stock returns are normally distributed, and a two-tailed confidence interval of 90%? explain your answer. b- is the Value at Risk of this investment at a confidence interval of 90%? explain your answer. c- are the similarities and differences in calculating the above questions (a and b)? support your answer by drawing the needed figures showing each case.