18. XYZ Inc's bonds currently sell for $1,250. They pay a $90 annual coupon, have a 25- year maturity, and a $1,000 par value, but they can be called in 5 years at $1,050 Assume that no costs other than the call premium would be incurred to call and refund the bonds, and also assume that the yield curve is horizontal, with rates expected to remain at current levels on into the future. What is the difference between this bond's Yield-to-Maturity and its Yield-to-Call? (5 pt) 19. Stock A has an expected return of 10% and a standard deviation of 20%. Stock B has an expected return of 13% and a standard deviation of 30%. The risk-free rate is 5% and the market risk premium (TH-nr) is 6%. Assume that the market is in equilibrium. Portfolio AB has 50% invested in Stock A and 50% invested in Stock B. The returns of Stock A and Stock B are independent of one another, i.e, the correlation coefficient between them is zero. (A) What is the beta of Stock A? (3pt) (B) What is the beta of Stock B?(3 pt) (C) What is the expected beta of the Portfolio AB? (3 pt) (D) What is the expected return of the Portfolio AB? ( p)