3.75 years: 2.79 years Not enough information Question 17 1 pts Assuming there are no other differences, which one of the following bonds is likely to have the highest required rate of return? AA-rated callable corporate bond without a sinking fund provision AAA-rated, non-callable corporate bond with a sinking fund AA-rated callable corporate bond with a sinking fund AAA-rated, callable corporate bond with a sinking fund Question 18 1 pts Fallen angels differ from junk bonds in that: junk bonds refer to newly issued bonds with low credit ratings, whereas fallen angels refer to bonds previously rated as investment grade that currently have ratings below BBB O junk bonds have ratings below BBB, whereas fallen angels have ratings below CCC Ojunk bonds refer to previously investment grade bonds that have now have ratings below BBB, whereas fallen angels refer to newly issued bonds with ratings below BBB