5. All portfolios that lie on the capital market line: (a) contain at least some positive allocation to the risk-free asset. (b) contain the same mix of risky assets unless only the risk-free asset is held. (c) have some unsystematic risk unless only the risk-free asset is held. (d) are non-efficient except the tangency portfolio. 6. The table below she .w. Itmit arder book for Seashore Enterprises. If you place a market order to buy 1,400 shares, what is the total cost of the purchase? (a) $129,009 (b) $128,800 (c) $128,996 (d) $128,778 7. An investor buys $10,000 worth of a stock priced at $50 per share using 40% initial margin. The broker charges 5% on the margin loan and requires a 25% maintenance margin. In 1 year, the investor has interest payable and gets a margin call. At the time of the margin call, the stock's price must have been less than or equal to (a) $20 (b) $37.50 (c) $42,00 (d) $34.50 8. An investor can design a risky portfolio based on two stocks, M and N. Stock M has an expected return of 9% and a standard deviation of return of 15,0%. Stock N has an expected return of 8% and a standard deviation of return of 5%. The correlation coefficient between the returns of M and N is 0 . The risk-free rate of retum is 6%. The proportion of the optimal risky portfolio that should be invested in stock M is (a) 0%