Which one of the following bonds would you select if you thought market interest rates were going to fall by 50 basis points over the next six months? a. A bond with a Macaulay duration of 6 27 years that's currently being priced to yield 8.94% b. A bond with a Macaulay duration of 16.34 years that's priced to yield 9.89% c. A bond with a Macaulay duration of 6 82 years that's priced to yield 709%