Which of the following statements is true:I. The standard deviation of a short position is the same as the standard deviation of a long positionII. The expected return of a short position is the same as that a long position in the same assetIII. If two assets are perfectly positively correlated, then a short position in one and a long position in theother are negatively correlated IV. If we increase the weight of an asset in a portfolio, its correlation with other assets in the portfolio scales
up proportionately
Which of the following will have the effect of increasing the duration of a bond, all else remaining equal:I. Increase in bond couponII. Increase in bond yieldIII. Decrease in coupon frequency IV. Increase in bond maturity