At a yield rate of ja = 4%, an asset portfolio has a Macaulay duration of 8.36 years, with a convexity of 58.2. If yield rates rise to 14 = 4.75%, what is the estimated percentage change in the value of the portfolio? A. -6.372% I B. -1.542% C. -5.865% D. At a yield rate of ja = 4%, an asset portfolio has a Macaulay duration of 8.36 years, with a convexity of 58.2. If yield rates rise to 14 = 4.75%, what is the estimated percentage change in the value of the portfolio? A. -6.372% I B. -1.542% C. -5.865% D