please answer all questions in 10 min thx

If stock prices incorporate all publicly available information, then the market is considered to be: Select one: O a. inefficient. b. capital-market efficient. c. weak-form efficient. O d. strong-form efficient. e. semi-strong-form efficient. The benefits of diversification are highest when individual securities have returns that are perfectly positively correlated. Select one: O a. True Ob. False If a stock's expected rate of return plots above the security market line, the stock is underpriced. O a. False. O b. True. You are considering the following stocks: Stock x Standard Deviation of Return Beta 37% 1.39 31% 1.02 41% 1.19 Which security has the highest expected return? O a Security Y because it has the lowest beta coefficient and therefore the lowest risk. O b. Security Z because it has the largest standard deviation. c. Security X because it has the highest stand-alone risk. d. Security Z because it has a highest ratio of standard deviation to beta. e. Security X because it has the largest beta coefficient